What is the bra size 34B? The popular bra size 34B represents the combination of a band size and a cup size. The "34" refers to the band size and the "B" refers to the cup size.Read more...
So, what are the sister sizes to a 34B bra size? There are actually several. Every bra size has a set of sister sizes. These are bra sizes where either the band, cup or both are just one size up or down from 34B. For example, a 34B bra size has sister sizes of 32C and 36A. These bra sizes – 32C, 34B and 36A– all represent bra sizes with the same cup size (when you go up a band size, you need to go down a cup size to maintain your cup volume) but different band sizes. A 32C has a smaller band than a 34B, and a 36A has a larger band than a 34B. If a 34B bra size fits you, this generally means your under bust measurement is 29 to 30 inches and your over bust measurement at its fullest point is 36 inches.
Bra size 34B is 75B in Europe and Japan, 90B in France, and 12B in Australia.
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