Average breast size for teens
average bra size. The teenage years are a delicate, confusing time for both boys and. The average 14 year old also does not wear the right size bra. Here's the answer: There isn't really an average breast size for girls who aren't fully developed. So, before getting bent out shape over the shape of you, let's take a look at what the average bra size is for teenage girls across the states. Well as a pre medical student I've researched and studied and I know that the normal breast size is 34B that's an average normal for girls from the age of Answer #5 Im 14 and im a 32DD. Apr 11, · Best Answer: There is no average breast size! It really varies from girl to girl. It really varies from girl to girl. I mean, it is a bit more common to be somewhere from like maybe a Status: Open. Oct 16, · Most 16 year olds will probably have their adult breasts, or almost adult. Some will not be fully grown though, and will continue growing. Breasts won't grow anymore once you reach 20, at least not normally. There aren't any statistics or polls taken on the average bra size for a 16 year old, but I am pretty sure I can make a fair estimate.