Baby trans girls: you do not have "like, A cup boobies." Get some measuring tape. Learn your bust and band size. Do not eyeball this. Even if you dont want to wear bras, knowing your measurements will make shopping easier. Get your hip, waist, and butt while you're at it.
Most of all though, this will teach you to be less of a stranger to your body. Nobody really teaches you this. But you have a woman's body now. Treat it like one, like it is yours. You can be an outside observer to yourself through an objectifying gaze, or you can learn that your cup size is probably larger than you thought.
Cup size is not based on looks. It is based on surface area. Even cis women make this mistake and wear uncomfortable bras for years. On my second year of E, i took measurements again and was shocked to find I was a C cup despite what i thought was little visible difference in size; growth in other areas really played tricks on my eyes.
And while we are at this, if learning your measurements seems scary because you think it will make shopping scarier or that you'll never find something that could fit you; whatever hanghup you have, there are cis women facing it too. Maybe you'll never wear the frilly lingerie store stuff, but neither will an awful lot of women in general. Measurements in hand, you can find a lot of stores and resources catering to all shapes and sizes.
All this said, the societal standard that you "need" to wear one for decency is prudish bullshit. Do what will be most comfortable for you, but dont reject the notion of a bra as a fashion accessory; certain types look better with certain kinds of tops. Some tops are a tough sell without one. And many bralettes alone can make an incredible top for a layered warm weather outfit.
May this post reach someone who needed to hear it ✨️💚✨️



















