All You Need To Know About B Cup, 34B Breast Size. If you were to go back a couple of decades, the average bra size for a woman in America would have been 34B. This doesn't mean that the average breast size in America was a b cup.
How Big are B Cup Size Boobs? There was once a time when 34B was the average bra size in the USA. In fact, right from the invention of cup.
C Cup Breasts & Best Bras For C Size Boobs C cup breasts are one cup size larger than B cups They add one . Scarlet Johansson – 34C.