08-03-2014, 16:38
I think your best bet is to go by width like BonitaDD said. As long as it fits your chest, your starting bust size shouldn't matter too much. It might be hard to measure your own chest, so it could be a lot easier if you try measuring the diameter of a cup on a bra that fits you well, and then pick the NB cups with the most accommodating size. Good luck!