Lol oki so with bras, they are very tricky. Honestly, you just sort of have to try on different brands because something you'll be a C cup in one brand but then like a D cup in another brand. Me personally at almost 1 year of transition I'm sitting at a nice, 36D. Now my boobs have filled out some but there is still some conical shape to them, and I still have my breast buds (which are rather large), but I fill out my D cup bra completely, and I'm probably going to need the next size up in 2 - 3 months. But honestly, breast forms can help or fillets if you're just starting out, or a sports bra that has some molded cups to them so it gives a bit more shape to your breasts while you're growing and filling out.