So thanks to r/ABraThatFits, I received my measurements.

28C.

Well, that was hard to find (and I mean extremely hard). The few times I could find it were extremely infantilizing. BUT since that was just a starting point, I decided to cut my losses and order a 28D from Boux Avenue that was on sale. So in about two weeks, I will finally get to feel what it’s like to wear a bra that fits properly (assuming my intuition is correct on the cups). I’m excited!