I bought this type of high split skirt for my wife, making sure the split is at the front. It's going to be very interesting if you have such item getting your spouse to wear. Whenever you are having Uber ride or go on subway, the split shows everything under her skirt. For me I like how other guys can take glimpses in what panties my wife's wearing. For some of you who seeking more intense excitement, you can have your wife wearing nothing underneath.

Bicycle upskirt
 

Have your girlfriend or wife go on a bicycle ride while wearing a summer dress or a skirt is good option to expose her in an innocent way while maintaining plausible deniability. This will offer people just a quick glimpse of her underwear because her legs will moving up and down and she will be cycling by on a considerable speed.

We have had the same problem finding shelf bras for my gf; she’s been a D to DD depending on the year. I ended up getting her a lace bra she liked, and trimming the cups down to expose her nipples but look like it was made that way. The lace design makes a difference- floral or curvy lace patterns were the best. Once I figured it out she got the same bra in all her favorite colors. Well made enough to be supportive and still have her nipples visible! It was worth the effort.

Women on bikes drive me crazy - my previous partner would open a couple extra buttons and with no bra, when we rode, her little jiggling tits drove me (and all those we passed) crazy.

100% this.
Done that, with her in the shortest dresses possible and wearing microthongs, completely transparent lingerie knickers, or nothing at all and totally shaved.

If her legs are fit enough, you should also lower her bicycle seat as much as possible, so when her knees go all the way up, they will be pointing higher than horizontal and everything will be visible.

How does it look like? I would like to get the same for my girl

We regularly visit Hippie Hollow during the spring, summer and fall, and I love to have my wife walk around the park, exposed to basically everyone else in the park. Even what we wear into the park (no nudity in parking lot) is calculated based on how it will appear to onlookers when she strips. We enjoy watching others strip, but are amazed at how many layers of clothing some of the newbie visitors will wear into a clothing optional park. My wife usually will partially disrobe in the car before we arrive, and then walk into the park with only a bikini bottom or cutoffs and a beach towel over her shoulders to make it appear that her tits are covered.

She is quite intolerant of the occasional bushwhackers, particularly if they are still dressed. However, with men who have enough social skills to come up and visit about "innocent topics" she has no problem in letting them see everything during the course of a conversation. In the past, a few have gotten to apply sunscreen to her back and butt, but that is now frowned upon by the morality police, so its no touching, just talking and visual stimulation. We aren't swingers as such, and have zero interest in taking some random guy back to our hotel, but for guys who want to visit a bit, they certainly get some good mental images for later self-pleasure opportunities.

Even sunbathing offers opportunities for exposure. I like for her to lie on a foam mat next to the path, where anyone walking by can't help but view her. She won't spread her legs fully, but she does discreetly keep them far enough apart to allow those passing by to confirm that she is totally shaven. The entire experience has become quite addictive to both of us, and we are always planning our next trip to the Hollow.

This is a little more tame than other ways to expose in this thread. We were going on a trip with some friends to stay in Santa Monica. My wife had to work in office that day and she’s on the way out of town so rather than come home she asked me to pick her up then head directly to the coast. She gave me a list of things to pack including her black bikini. Now, she has several bikinis. So I played dumb and rather than grabbing the one I knew she meant, which is nearly full bottomed, I grabbed the one she typically only wears when we are at our pool or somewhere private. This shows off her entire ass.

We got there and met our friends at the Airbnb and had dinner and went to bed. The next day we arose and ate breakfast then it was off to our rooms to get ready for a beach day. As she realized I had packed her the thong her cheeks turned red. She was upset but I just shrugged and said I didn’t realize which one I grabbed. Then I reassured her every girl wears those now and it’s no big deal. Well, every other girl at the beach did indeed have their asses hanging out but not our friend we were with. In fact she wore short shorts the whole day, much to my chagrin as she has a nicely shaped butt. Meanwhile our male friend must have taken 50 looks at my wife’s bare butt cheeks throughout the day.

invite a friend over for a beer, have your wife pretended like she didn't know anybody was there and have her walk out of the room naked.

Hi Midwestmom, it sounds like maybe you've done this before??:D