My wife sounds just like your wife...I'd love to chat with you about how I've dealt with the same situation as you

I would recommend not posting her pics without her consent, however, there is hope. When webcams first came out I tried to talk my wife into exposing herself to guys, she was not budging, she didn't want to do it at all. Then one day I was showing her that she could chat with people all over the world, we linked with a guy far away, she was having regular chat with him, then her started to flirt with her, a few compliments and before I knew it she was topless while he was jacking off for her. She got braver and braver to the point that she really liked these long distance sexual encounters.

So, the right circumstances, maybe some tame pics, if she sees how much guys appreciate her, minds can change.

Like with anything in life, if it's good, you gotta work for it.
I think for most women you have to build to it. You just can't expect her to do it off the bat.
Not sure what she will and won't do, but lingerie is a good first step. Then there are a multitude of things you can do to build it up.
Start taking regular photos of her. Just normal ones at first. Get her used to the fact of being photographed. Get her to wear nice bikinis to the beach. Slightly sexy clothing when you go out on a date. Compliment her looks. Make her feel good and happy. Stay in a hotel. Go on short vacations. The more relaxed she feels the more she'll be open to it even if her upbringing tells her no.

It would be great if you could write it here for the benefit of everybody.

If you really have the urge, start by sharing clothed ones. In bikini, nightware, outfits with some cleavage or nipples poking. And he sure you share the link with us!

And as mentioned in an earlier post, once she is used to her picture being taken, she will care/mind less if a bit more skin is shown.

My wife
 

My wife is 5’6” tall and around 125lbs. She is a classic conservative soccer mom type. She has little a-cup tits. She has always felt like she’s not attractive because of her tiny tits. For that reason, we well as her religious upbringing and her Mom status (“Moms should always cover up their bodies “) my wife has always dressed very conservatively.

Through the years I’ve frequently noticed other men checking out my wife. She has a cute ass and incredible thin legs. I’ve also noticed many men looking at m wife’s little tits and trying to look down inside her blouse when she’s bending over. I get an instant boner whenever that happens.

I have long fantasized about showing my wife’s nude body to other men so they can cum to her. Unfortunately my wife won’t pose nude for me. But she knows how badly I want other men to enjoy her body.

Slowly but surely I have raised my wife’s self esteem about her body by pointing out to her the moments when another man is ogling her body. At first she responded by thinking that these men were complete perverts. But over time, she began to understand that these men are mostly normal men who are naturally attracted to a very attractive soccer mom..little tits and all.

About 5 years ago, my wife gave me the surprise of my life. After years of trying to convince her to wear sexy clothes in public without success, on a hot summer day my wife began her transition.

My wife returned from a shopping trip one day. She held up a bag from American Eagle and said “this is a one-time early birthday gift. I begged her to let me see what was in the bag…but she didn’t want to spoil the surprise.

Later that day we prepared to go to our neighbor’s house for a cookout. My wife exited our bathroom after showering and my jaw dropped. She was dressed in her usual khaki shorts….they always show off her long thin legs so good! But for a top she had on a flowered print cotton spaghetti strap shirt. I immediately looked for signs of her bra…she always wore one. But to my instant hard on surprise, a brush of my hand on her back revealed that my wife was braless!

To add to my surprise as my heart was pounding, the low v-neck cut of the shirt was loose fitting. As my wife moved, the light cotton fabric gaped open to give an unobstructed view of my wife’s little tits and her puffy inverted nipples.

My wife changed her mind about wearing that shirt about 5 times in the 30 minutes before we left the house. But finally…off we went to the cookout.

I noticed that at least 3 of my male neighbors were instantly checking out my wife as we arrived at the cookout. I asked my wife to notice and she responded with her usual strong desire to cover up but she also responded with satisfaction that I was so turned on by the fact that men’s eyes were popping out as they noticed she was braless.

As we were at the food table, people lined both sides of the table gathers their food on their plates. I stood next to my wife as she got her food. As my wife bent over the table to scoop potato salad, I noticed two of my neighbors on the other side of the table. I could almost hear them gasp as they got an unobstructed view down my wife’s blouse. I could feel drool shoot out of my mouth…I was so excited that other men finally got to see my wife’s tits!!! My wife was clueless that this was happening which made it even more exciting too.

Nope
 

"I just feel like if I finally did, and someone saw and commented on it, and possibly came, an itch I’ve had for year would finally be scratched."

Ahh, no. You would find yourself to be much more itchy.

It really does take very small steps over what could be years. But the thing I've learned about women over the years is that what they will and won't do is never a hard and fast line in the sand. That line is a wavy, wobbly thing that can and will change over time!

I think MW69's post is a great example of the step by step.

In the end she may not agree to what you ultimately want, but along the way you will probably have a heap of other fun experiences.

Do not betray her. I am in a similar situation. My wife does not want me to take pictures of her period. She has started to relax a bit though and it may be coming. A year or two ago when I was on an over night trip, I sent her a picture of myself in boxers hoping she would send something back. She sent something super tame back. every time one of us is gone over night, I have started doing this and getting more revealing. She has started getting more revealing as well. I make sure to compliment the picture and tell her how great she looks in it. It is a frog in a pot of water type situation.

Now as far as sharing pics, I am glad others do because I like to look but I have no desire to share. I really do not understand the thrill. I am not judging, I have some views and such that some on here would find weird probably but that is just me. I will not even share the pictures I have of my ex or the ones I found of my aunts. Since I do not have specific consent, it feels like a betrayal even though my ex is in the past and my aunts are dead.

If you want to do something low risk, post a photo without showing her face