Well....it's incredibly difficult to find bras my "size," so I can't quite give you a definitive answer. However, as a guesstimate? I'd say somewhere between F and H (and that's not ABCDEFG; I'm talking after ABCD, DD, DDD)? I've given up looking for band sizes 34 all together, so I primarily wear 36. All I can say is THANK GOD I'M 5'9 so they can at least appear a little smaller than what they are!!! haha Any tips on where to find big-busted lingerie?