My wife rarely wears a bra. Always when we're on the SxS in the desert. The bouncing can make them sore. The other is when we visit my best man and his wife. For some reason, she feels it necessary to wear one then
Occasionally she has run into problems with other WOMEN, usually middle aged. Just a couple of weeks ago, she was waiting for our youngest daughter to come out of the bathroom, and this woman walks up to her and asks, do you think that's appropriate to wear? Wife answered yes and the woman stomped off. This particular top was not in the least bit sheer. She will wear somewhat shear from time to time. Our youngest daughter is at best a "A", with a trim figure. Used to drive me crazy, she would wear TWO bras. Not anymore, don't even know if she owns a bra now. That a girl, LOL.
One of my favorite tops is really shear. She was worn it with a shear bra, and will eventually take the bra off at a restaurant. I don't have a pic of that
We have a friend that absolutely hates clothes. Nude everywhere legal and even where not legal. Boggles my mind she wears a bra when clothed. Someday I'm going to have to ask her about that