Question: what is the difference between bra size 34b and 34c?
Answer: The difference between 34B and 34C is in the cup — the part of the bra that actually holds each breast. B is a smaller cup than C, meaning it holds a smaller breast. The 34 refers to the inches around the chest right below the breasts. ... As you go down in band size, for the same sized breast, you go up in cup size.