In another thread I was asked who has urged, suggested, encouraged, helped, supported (you pick the word) my wearing a bra and who knows I wear a bra.
As I have said, I developed breasts at puberty same as when the girls in my class were growing breasts. Back then I heard a stream of comments, the most common being you need to wear a bra. I don’t count that as fitting the question here. My development back then stopped at about a B cup and I remained smallish for decades. I would camouflage as much as possible.
Intimate encounters over the years were mixed. And for obvious reasons 😘 not that numerous. Some partners pretended to ignore, some were turned off, some curious, and some treated as you would a woman’s breasts. Among the latter groups there would be “why don’t you wear a bra,” “you should wear bras,” “you would like wearing a bra,” you would look good in a bra” or something else along those lines. Once in a great while, one would want to measure me for a bra, offer to go bra shopping with me, give me a bra she guessed was my size, and the rarer still, incorporate my wearing a bra into our play time.
During that time, I was never very comfortable with my breasts, so more awkward than receptive to such reactions, and their interest in my breasts, and me, always petered out.
As I said, I was camouflaging, learned pretty much all the tricks, and overall not getting much general reaction that it was obvious I had female breasts, areolae, and nipples.
So, that is hopefully a good start of the answer.