In school it was obvious I had breasts, as I had to show them off in gym class every time I was on the skins team, which seemed to be every time. May as well have worn a bra to school as it was no secret and may have actually looked more modest in gym class. But as a young teen with all the social pressure you are not thinking progressively.
In adult life, it is obvious I have breast development with or without a bra. Quite some time ago I decided I felt more comfortable and better about myself to wear a bra full time rather than occasionally, and I think I actually present better in a bra with improved shaping and control. But, particularly in my own neighborhood, I stay with concealing shirts that hide the straps. I feel confident wearing a bra full time although there is still a risk from random hugs. I just don't want to get into conversations with people local to me about wearing bra.
Outside of my neighborhood, I am less concerned about visible bra outlines, although I am still reserved.
I have always wished that it was without any social stigma to have breasts and wear a bra. In the end, I don't mind having breasts and needing a bra, I just wish it was "normal" and no perceived need to hide it.