I used to work in an office that looked across to houses in inner city Melbourne. A few times, one of the girls from across the road used to get changed with the curtains wide open, so I occasionally would look across & see her totally nude for extended periods of time. She had to know what she was doing...
A couple of times, as I walked out of the office & past her house, she walked out of her front gate at the exact time I happened to be there. I stayed as calm as I could :)

Friend's Sister
 

I posted this story under a different name some time ago. 100% true...

The year was 1986, and I was in my late teens. I climbed up on the roof of our one-story house to get an unobstructed view of Halley's Comet, which only comes around every 75 years or so. My best friend lived behind us, in a two-story, and one of his sisters occupied an upstairs bedroom. Apparently, she didn't realize what happened when she turned on her light but didn't shut her blinds. This was an absolute dream come true.

She flicked on the light, which immediately got my attention, walked back and forth a few times, then unbuttoned her shirt. Off it came, not in a seductive sort of way, but just someone who is changing and doesn't realized they are being seen. I saw she filled her bra nicely, and had never noticed before that she had nice sized tits.

Then, in answer to prayer, she took off her bra, walked around a little more, and it appeared she liked being free of her clothes. I had about 20 seconds of uninterrupted view of her beautiful, Baptist breasts. She then put on a t-shirt or something, and the show was over.

A nice consolation prize: she and I are friends on Facebook now, and let's just say she continued maturing :)

Does she know what you saw? I had a similar moment and it was very cool to tell her year later that yes, I’ve seen your tits.

I once had a chance to tell a good friend that I saw her boobs several years prior. She asked me to tell her ALL the details about how I saw, what I saw, etc. I could tell she was REALLY turned on from hearing about it!

My sister-in-law's breasts
 

On multiple occasions

I'm intrigued. How did you manage to do that?

Oh, yes, me, too. My sister in law wears shirts and stiff padded bras that are several sizes too big to hide her body shape (which is stunning, by the way). So, every time I see her, I get to see her breasts sitting in her bra, including her very long nipples that are always poking out.

In her quest to make sure she always hides her body...she ends up always showing it.

She is aware of it, as she is constantly holding her shirt back, etc, but she doesn't catch it half the time.

Day at the Hammam
 

There's a boutique spa in my city that I've been going to frequently for the past couple of years. Their service includes a scrub down from the massage therapist in the hammam steam room where I'm naked except for a thin hand towel that gets placed on the crotch area. It doesn't leave much to the imagination.

The massage therapist I usually see is a European girl around 27 with an attractive body (5'6" with good sized breasts, fit body and a curvy ass). She usually wears a tight fitting sleeveless top with a sarong. I've often tried to picture what she looks like underneath all the clothing. We chat a lot throughout the service so I feel like I've gotten to know her pretty well over the past year.

On my trip to this spa last month, I booked the last appointment on a weekday. I finished the usual 1 hour treatment and was escorted to the lounge in my bath robe to relax for a bit before getting changed and leaving. I was the only guest left at the spa. I usually spend 10-20mins in the lounge as there's food and drinks available. However, I decided I was ready to leave after about 2 mins and so I walked towards to changing room.

As I approached the changing room, I saw that the door to it was closed with a sign saying "Being used, please contact the spa attendant at the front desk". I immediately thought that one of the spa employees must be using the changing room. I took a minute to think, and then decided I was going to walk into the changing room and claim ignorance if anyone got upset with me.

I took a deep breath and slowly and quietly entered the changing room and went towards my locker. I could hear the shower running. The shower room is directly opposite to the lockers but since the curtain was drawn, I couldn't see who was in there. I removed my bath robe, and stood there with my back facing the shower with a towel in hand pretending to be drying myself.

After what seemed like the longest 3 mins of my life, the shower finally stopped. The shower curtain was drawn back and I heard a "oh" sound in a female voice. I confidently turned around and saw the European therapist standing butt naked. She instinctively covered her breasts and turned her body sideways. I said "hi" and continued to dry myself pretending not to be too interested in her.

She stepped out of the shower and was drying herself with her back facing me. I got a good look at her smooth round butt which looked well toned. I made some small talk with her which got her to turn around and face me. We continued to talk and I took frequent glimpses of her heavenly body. She was more comfortable now and seemed to willingly expose her front side. Her boobs were "perfect" without the slightest hint of sag. Given how much they jiggled, I'm certain they're natural. Her nipples were dark pink and the size of a dollar coin. They looked soft and relaxed (perfect to suck on). She had a light bush (looked like she had clean shaven a few days ago) but I could still see her pussy's outer lips and clit which were light pink. By this time I had a semi-erection that I pretended wasn't there.

I'm sure she saw me looking at all her bits but I didn't care. I continued to memorize her naked body. She finally wrapped herself in the towel and proceeded to one of the maintenance rooms around the corner. I guess she must have left her clothes in there. I got dressed and left feeling like a million bucks. This has got to be one of the most erotic moments of my life. I felt very lucky to have seen what I was definitely not supposed to see.

I visited this spa again last week and had the European girl tend to me. There was no mention of our little experience from last month. As I was lying there almost naked getting scrubbed by her, we talked like always and I had a thrilling sensation knowing that I no longer had to imagine what she looks like under those clothes.

The first time
 

My experiences are quite different from Gnome's.

My wife (let's call her M) and her twin sister (let's designate her F) come from a conservative/religious family, so modest dress is the norm. No plunging necklines or skimpy clothes of any kind.

Over the years I've cultivated a "comfort level" with my wife's sister so on various occasions she has let her guard down.

The first time I had occasion to see her totally topless (although I had already seen nipples here and there by then) was about 12 years ago. M had bought a whole load of clothes and, being the same size* & shape (and with the same taste in clothing) as her sister, had invited F over to try some of the things on and see if she wanted any of them.

*Different bust size (F is considerably bigger)

It started modestly. We were all in the living room and F would step in to the other room to change shirt, then come back to show us and discuss with M. This went on for a couple of times, while M would just pull off her shirt right there and try the shirts on to show F. F was getting bothered by having to walk out each time. After a few she just said "busgusti don't look" and after I turned away she changed right there in the living room. So of course, being the good brother in law that I am, I kept my eyes averted. For the first one, maybe also the second. Let her get comfortable. A few shirts in and she didn't remind me to look away. Just peeled off her shirt and changed in front of me. Then the skirts. By this time both M and F were just ignoring my presence and F just got changed right there in the living room, as if it were her own house. Naturally, I just went about my own thing without calling too much attention to myself and enjoying the odd view of F in her bra or panties.

Now here comes the interesting part. It turns out M had also bought a couple of new bras and had gotten one for F to try. They're of totally different sizes so those are not interchangeable between them, but my wife swore by these new bras ("they're soooo comfortable") and had picked one up for her sister.

As soon as the talk turned to bras I made myself scarce, keeping out of the living room in the hopes that F might just try that on right there as well. The front of the house is open plan so I wasn't really behind any walls, just distanced from them but could easily turn and look their way should something happen. F was comfortable, but not comfortable enough. The next I heard was "I can't change here, busgusti is right there" and she removed herself to the other room to try it on.

F came back and they discussed the bra, but seeing how it was the last item to try on, I figured the show was over. I went in to another room and left them totally alone in the living room, leaving the door to my room open so as to still be able to hear snippets of their conversation. After about 20 minutes, their talk returned to the topic of the bra with M saying she liked it and F saying something about her other one being better. 'This is interesting', I thought. It sounded like F was about to show M the bra she was wearing when she came over that day. I realized I needed to time this perfectly if it was to succeed.

I left my room quietly and started to make my way back to the living room. Their talk became clearer and indeed F was saying something about her original bra. And just when I thought it would be the right moment I stepped in to the living room and there, clear as day, was F totally topless and holding her bra in her hand about to put it on.

They're a great pair.

That sounds like an awesome experience! Thanks for sharing. :-)

Roommate
 

Quite a tame one. Years ago I had a female roommate. She would always come home and change into pyjamas, typically short shorts and a vest without a bra so lots of nipple on show. But that was it really, as she had a long distance boyfriend and we were just friends.
But one morning I got up early and was walking to the bathroom, her door was open and there she was in nothing but a thong. Her back was towards me but she was just turning round so, as well as a good look at her seriously peachy bum, I caught a quick glimpse of her side on before she saw me and I kept walking.
After that we were are a bit more candid, she occasionally briefly walked round in underwear, showed me a handbra holiday photo and she saw me full frontal when I forgot my towel and had to dash back from the shower. Sadly I never got to see those gorgeous nips in the open again or see more than a hint of what was inside those lacey thongs.

Mom and Dad go for a late night swim.
 

I saw my mom and dad having sex once in our backyard pool. Mom was very pregnant at the time.

Here's the story:

One late night I can remember mom speed walking across the living room to her bedroom to get dad. I was watching TV in another room and heard mom tell dad to get his swimming trunks on. We had a pool in our backyard and it had been very hot during the summer and we all enjoyed a cool dip now and then.

Mom came out with dad and they were both dressed in their swimsuits. Mom was about eight months into her pregnancy and her belly was quite big at this stage. She was wearing a light blue one-piece swimsuit that showed every detail of her curvy, athletic body, especially her breasts and belly. Her bum checks poked out of each side.

They asked if I wanted to go for a swim and I said I'll pass. They both went out into the backyard and closed the back door. I was getting tired and headed off to bed. I first stopped into the kitchen to get a drink and saw that the backyard was pretty dark, except for the pool light which was on. A window was open in the kitchen and I could hear mom and dad splashing around. I didn't think much of it until I heard the splashing stop and then saw mom bringing dad closer to her for a kiss.

Mom put her arms around dad's neck and they began to kiss each other passionately. I could see their tongues enter each other's mouths and dad's hands began to roam up and down mom's back.

They kissed some more and then dad pulled the top of mom's swimsuit down exposing her breasts. Mom had about C-Cup sized breasts and thick pink nipples that stood out from each globe. There were freckles on top of her chest that I found very cute. Dad began to kiss down her neck and eventually his mouth latched onto one of her nipples and he began to suck on it. Mom threw her head back and she let out a few deep moans. Dad's mouth moved over to her other breast and he reach up with his hand and gently began to massage mom's other breast and pinch her nipple. He then placed his mouth on her nipple and began to suck on it. Mom had a huge smile on her face and her arms were around dad's neck bringing him closer to her.

A few more minutes passed and then they made their was back into the pool where dad removed his trunks and threw them aside and then went over to mom and removed her swimming suit. They swam around in the pool naked laughing and playfully splashing one another completely naked.

Dad then picked mom up in his arms and I got a good view of her naked body and my dad's erection in the pool. Dad then placed mom on the pool step and began to kiss down her neck and spent some more time kissing her breasts. He let a hand go down in the water under her belly and I can only assume began messaging mom's vagina. My mom and dad both had thick dark bushes over their private areas. Mom let out some more deep moans saying "Oh yes baby," "Right there baby," "Don't stop daddy." Dad then began to kiss mom's belly all over. Mom really loved when dad did that. Her face always blushed deep red when dad gave her belly massages at night.

Mom then got off the pool step and went over to dad and kissed him again. She let a hand go into the water and grabbed his penis and dad said something along of the lines of "Aren't you a naughty mommy." Mom said "Let me show you daddy." Mom then led dad over to the side of pool and lifted him out of the water. She parted dad's hairy legs and began to kiss the inside of his thighs. After a few minutes, she took dad's erection into her mouth and with another hand massaged his balls. She let her other hand roam dad's hairy chest and abs. She then looked up at dad and flashed him a smile. Dad smiled back. Mom then planted a kiss on the tip of dad's penis and then mom and dad went back into the pool and the two lovers went for one more quick lap.

Both of them got out of the pool and I got a good view of mom's pregnant body, including her full, thick dark bush which had steams of water flowing down it. Her belly looked huge, very round and her breasts looked totally engorged. They both went over to grab their towels and dried themselves off before covering themselves off before coming back inside.

The photo attached is of both of them during this time.

Pics of my mom
 

A few years ago in my 20s I was dog-sitting for my parents when they went on vacation for a week. They have a safe in their closet that I was trying to remember the combination for. I knew it at one point ten years previous and I was trying to get it unlocked. After a dozen or so attempts I got it unlocked.

Inside was my dad's handgun, some gold / silver coins, passports and other important documents. Also in there was an old digital camera. After holding the gun and looking at the coins for a bit, I grabbed the digital camera and turned it on to see what was on it. And essentially was hundreds of pics of my mom in various lingerie poses and some nude poses around the house.

The battery on the camera died after a few minutes of looking through the pics. I found the charger cable for the camera in the safe, charged the camera back up and continued to look at the pics. Going through the lingerie photos towards the end was also a series of a few dozens pictures of my mom on her knees giving some guy a blowjob - and it was definitely not my dad she was doing it to. She was fully clothed wearing business attire clothes (dress pants and a satin collared blouse) and the guy was naked standing in my parents' living room. His face wasn't in any of the pictures, but he was in good shape and judging from what I could see he was likely much younger than my parents. The timestamp of these photos were taken in 2015, which would have made my mom around 53-years-old at the time.

I didn't mind the lingerie pics and even the blowjob pics were fine too - assuming my dad knew about it and was the person taking the pictures. But the last couple of pictures in the series of pictures on the camera from that night was my mom looking up at the camera and her face completely covered in cum. Like an unreal amount of cum roped across her face, in her hair, and covering her eyes so she could barely even open them.

I was sort of turned on going through the lingerie pics. And when I first came across the blowjob pics I was stunned but I still found them to be interesting. Then I saw the cum on her face pics and I was pretty disgusted. I've never really thought about my mom the same since seeing those.

My wife's parents have an album in their house somewhere with a load of nudes of my mother in law in. My wife and sister in law found it. They both wish they hadn't seen it. I'm obviously very keen to get my hands on it!

The dress
 

This is pretty tame compared to the other posts. Ten years after getting married my wife decided to throw out a bunch of clothes. I thought she meant to donate them so I added her pile to some of our kids clothes we were throwing out. I didn't recognize one of the dresses she was throwing out so I picked it up just as my wife came into the room. She grabbed the dress and said that I don't need to see that. After some questioning I learned it was a dress she would wear to the clubs when she was single. She wouldn't put it on for me but she did hold it up to her body. It was super short barely covering her ass and very low cut. She said it was paired with some 3" heels. I never seen my wife wear heals over 2" in my life. She took the dress away and that was that. A year later we were visiting her family and I mentioned the dress to her sister and she said "Oh, the fuck me dress" and went on to mention that when my wife would break up with a boyfriend she would go out the clubs with the "dress" and heels. Her sister said it was always 100%.

My ex's sister
 

I once saw my ex's sister topless when she'd sent a message to my ex of her on holiday. I've thought about that a lot of times since!

My friend's friend
 

A few years back I was sharing a place with a girl from my university course. During a summer break, one of her friends came to visit and stayed over for a few nights.

She was a nice petite, 5’3, brunette, rock-chick type, really slim, small ass etc...
She was staying in the livingroom, sleeping on the couch while she stayed. I definitely found her attractive.
There was a mirror in the hallway that I could see the reflection into the livingroom from my bedroom. So, after she had a shower one evening, I slightly opened my bedroom door to look into the mirror. She had left the door open enough that I could see into the livingroom.

Saw her standing there in just a towel and putting away the clothes she got out of into her bag. Then she took out her top and shorts she was going to wear to sleep.
Then she took off the towel, her back was exposed in the reflection, and I saw her petite ass. Looked flat but nicely formed.
Then she turned to the side and I got to see the rest of her. Her slim frame was barely interrupted by her breasts, they were really small, a-cup type size. And I saw her nice pink nipples, poking slightly upwards.

She had no idea that she was fully exposed to me. Had a good look at her pussy, well mostly her brown pubes since she wasn't shaven. She was single, so clearly hadn't been keeping herself tidy for a guy.
She rubbed the remaining drops of water from the shower off with the towel and started to put on her tank top and shorts. Then the light went off and she got under the blanket on the couch.

I spent the next 30 mins or so jacking off over what I had seen and slept pretty good that night.
In the morning, I bumped into her in the kitchen and saw her in the same tank top and shorts. Could see her petite erect nipples poking through.
Couldn't stop thinking about her for the next couple of weeks.

So, that's one of my "something I shouldn't have seen" experiences. Have a few more if others are interested.

Yes
 

Yes please!

Willing to share location?
 

Great story!

Would you be willing to PM me that city or US state (if it is US)? I went to a place in my state last weekend to my first hammam. Where I went, I wore the small towel with nothing underneath. It continually slipped and came off. I was hanging out a good deal of the time.

I have googled a bunch and can't find another hammam experience in the US where a female will take care of a male or where disposable underwear is not required.

If there's a chance at another experience like this I would love to know! Thanks!

Tinder Pic
 

I once discovered a Tinder profile picture that I know I wasn't supposed to see, of an extremely close relative (not my wife). That's probably all I should say, but if you let your imagination run wild, you'll figure it out. I never said a thing.

When my wife and I were just dating we stayed at a family friend’s vacation house condo in Southern California. My wife had initially planned a trip with her friend but then invited me. Her friend insisting as well. A weekend at the beach with two pretty gals, sign me up. The condo had two bedrooms separated by a shared bathroom. One evening we went to the condo’s pool and spa. When we were done soaking we headed back to the condo. I was put in charge of making drinks while the two ladies headed off to change. Suddenly I was hit with the urge to pee so I headed to the bathroom and opened the door. My wife’s friend stood butt naked and let out a gasp. She was gorgeous. B cup tits. Fit slim body and a nicely trimmed set of pubes. Her gasp turned to a smile and she winked at me and shut the door. She covered her tits with one arm but let her pussy be on display. I was a little bit shocked and headed back to the kitchen. A minute later her friend joined me and made a couple jokes about me being a peeper. I told her I swore I thought she was in her bedroom. She said she knew. Then my wife joined us and I wondered if we’d keep it a secret but her friend blurted out “he just saw me naked”. She relayed the story and took blame for not locking the door or using her bedroom to change. My wife laughed. Later she asked if I liked what I saw and I didn’t know what to say and she added “I’m kidding of course you did. She’s beautiful. Honestly I’d kinda like to see her naked.”

To this day what gets me about the scenario is her friends reaction. The gasp would be expected but not immediately slamming the door or covering all the way up. She really just let me have a look.

A few years ago I went to a naturist event that was held at a farm about 20 miles from where I live. At the farm is a naturist camp site but once a year for a week, they open it to all comers. I was only there for the day as I'm too old for all that camping malarkey.

During the day we had various silly games and during the evening there were more games, a quiz and some karaoke. Afterwards I noticed there was a table tennis table and the couple who had set up the sound system were playing on it - not very well. I said, "I used to be quite good at this," whereupon the husband handed me his bat and wandered off to speak to somebody. His wife was dressed in a big floppy pullover that came down to her knees, but after I'd given her a few difficult shots to chase down, she decided she was too hot and off it came. So there I was, having a game of naked ping pong with this reasonably young, and extremely attractive woman!

But as if that wasn't enough, when the game finished she realised that in one corner was a pole - I mean, a pole dancing pole! She said, "I learned to do this when I was younger," jumped up onto this bloody pole and swung around for several minutes showing us all her moves … and a bit more besides …

And I'm stood there, a few feet from the woman's husband thinking, 'I'm not sure I should be seeing all this,' and trying hard to maintain control!

It rounded off the evening very nicely though, and went straight into the wank bank, where it's stayed to this day.

Revisiting this, I remember a few other instances which fit this thread;

One was my next-to-youngest SIL (there's a few of them) staying with us while on holiday in a large, static caravan (trailer - for our Trans-Atlantic friends!).

We were up well before them one morning and just engaged in casual conversation when her toddler son decided to climb on the bed with mummy. Instead, he very efficiently succeeded in removing the quilt, leaving K completely naked right in front of me! She had the most gorgeous, lickable nipples...!!!

Another was while working away with my Senior Design engineer, we had adjacent hotel rooms and were getting ready for dinner after the day's work. I was ready - wasn't sure if R was so knocked on her door. She opened it - clearly wasn't but invited me in anyway, immediately revealing that all she was currently wearing was a lace bra and matching thong - and she proceeded to continue her preparations while wandering about the room and talking to me like there was nothing unusual about it!

The third - which I really need to delete from my memory - occurred when I was doing some work for my partner's SIL. W is a curvy chick to say the least. Her tits are monumental and enter the room a good minute before the rest of her!! This was early on a Sunday morning and she was only wearing a t-shirt nightie as she showed me what they wanted doing and left me to it while she got on with the cleaning.

When I was done, I went to find her - half deliberately hoping I'd catch her in a revealing position. Unfortunately I did... but it wasn't those amazing tits I got a full view of - she was bending over the bath, revealing what I can only describe as a badly-packed kebab between her thighs!!!

The trauma still haunts me to this day!!!