Lol... Many ham sap guys here. TS, actually dun hav 2 really care much bout d actual size. Cuz when u r buyign a bra, best is to try it on, Different brand n cutting sumtimes need u 2 buy a cup bigger/smaller.
Guess the best method had been provided in this thread. Palm method... I doubt its reliable. I mean we all hav different sizes of palm.