I have been advised to try dressing a bit more, even if only in private. In particular, bras.
No hormones here, and I'm skinny enough that my ribs are right under the skin all the way up. I'm as flat-chested as is possible. One day in the future, I very much hope that will not be the case. And when it comes to socially transitioning, which has to happen well in advance of any hormones, I accept that I'll have to get myself some breast forms or something.
Right now, I wouldn't mind trying out something at least bra-like, to get used to the idea, to feel a bit more feminine. But even AA and AAA bras are still made for women with something in the chest department. Training bras, unsurprisingly, are not aimed at someone with my chest size (though fortunately at the very low end for a man).
I presume, given that I've found nothing, that extremely flat-chested women just don't bother with bras? But then, I suppose very few women are completely flat-chested.
I don't want slack/empty cups on the front, but neither am I really inclined, at the moment, to add anything there either. I'm not that keen on wearing something that fits a body other than mine, at least until I need to to help pass. It'd just emphasise what I don't have.
Any suggestions?