I begged for a training bra at 13. There was nothing to train, but I still got one. And I've had every variety of bra since. Mostly ones that were supposed to make my AAs look bigger.
Funny thing, teeny tiny bras with a lot of padding cost more than regular bras.
Sometime in my 40s, I must have hit puberty and my AAs went to a solid A. I wore super cute bras with my cute little suits and dresses. As a lawyer, I had to look good
Now at 53, I've been braless for probably 4 years. Once I left the work-a-day word for writing, I took off the bra. If I ever do wear one, it's because what I've chosen to wear is white or sheer or requires it in some other way. Otherwise, no bra. My teeny tiny titties are still perky, still up high where they're supposed to be and small enough that nobody's going to notice.
I'm never going back.