I agree this forum is welcoming, accepting, and non-judgmental now. It has not always been that way. Given my lifelong experiences and my own reactions, I find I shut down very quickly when those around me, including here, are not open minded and supportive.
As a young teen, when my breasts were budding, I was first oblivious, then in denial, then embarrassed and ashamed. The teasing and groping contributed to my negative feelings.
When I first tried on a bra, and filled the cups, felt the gentle hug of support and no more provocative jiggling and saw I was no longer suggestively poking through my tops and my shape was naturally and, yes, attractively, uplifted and rounded, for the first time, I had positive feeling about my breasts. It seemed a little conflicting and confusing that I was feeling good about being in a bra, when I only first tried it because so many, including my mother, had teased or joked I needed to wear a bra.
They were all right! I did need to wear a bra. And I liked it. I, especially liked that my mother was right, as I had overheard her laughingly speculate we were the same bra size. And her bras did fit me like they were made for me.
Throughout high school, I would revel in privately wearing a bra. After a while, my mother became encouraging about me wearing a bra in private. After first unknowingly sharing her bras with me, then showing me her bra collection, teaching me about the different styles, and suggesting I wear her bras, so i would learn what I wanted for my own bra collection. She even joked, that at the rate my breasts had grown already, I would soon be spilling out of the cups of her bras. She made it sound like a good thing.
My mother also was cognizant of the challenges and risks of openly wearing my bras, such as to school, and worked with me on the best ways to conceal and camouflage, including too-tight thicker undershirts, layers, darker, thicker, patterned tops. So I had this split personality of in private openly enjoying and feeling good about my breasts and bras and in public being embarrassed and trying to conceal.
That conflict and confusion would play out, in various forms, for much of my life