I don't think there is an average size of boobs, it varies all the time. I couldn't be certain but I am 17 and mine are 34DD alot bigger than all my friends but I have some friends who are still an A so im pretty sure everyone just varies.
There is not a really clear cut answer for this. Women are all different. Some have large breasts and some have smaller ones. Each woman is different based on her genetics. Some develop breast early and some later in puberty.
An 18 year-old woman's breasts could be any size, depending on a variety of factors. These include, but are not limited to, genes and physical fitness level. Keep in mind that every woman's body is different, and no size is wrong, too big, or too small.
I would say that the average size would be a mid b cup.
An average is meaningless because there is such large variation between women.
bra sizes 32a - 32c
I am a 11 year old girl and I have no boobs. So really the average size is none. I only have breast buds.
32A or 34A would be average bra size for a 12 year old girl.
34
34B
b or c
1 cm
Its depend upon their body type..
it depends on your gens my gf is a 42d and is 18 years old
Id say anywhere from 30A-36B
The average size is a 32 A or 34 A but if you are bigger or smaller its just how your body is growing
Untill a women gets to around about 20 there is no average size as all humans carry on growing until roughly then.
I think that a 16 year old girl's breast areola size should be around a size 16