There is none. What size you'll have depends on your genes.
If you are 11 or 12+, then you may be going through puberty. The increase in gonad size and the breast size is a sign.
There is nothing you can but wait for puberty. If puberty is over you can ask your doctor for help but surgery is the only way then.
There isn't actually a 'normal breast size' because everyone is different.
No because your breast develop during puberty at it will take a good few years of developing to get that size
Age does not determine breast size. Any size is normal.
It's different for each girl. For a girl who has hit puberty and has been experiencing it for long it is normal for them to be from a cup size AA-D but it all depends on the DNA and family history.
A chicken breast can weigh up to 1/2 a pound.
I'm a bit confused of your question. Like what part of puberty are you talking about? Your breast size doesn't matter. Many normal girls have small breasts and big breasts and their puberty were normal too. So I'm guessing that answered your question.
It's not exactly normal for a three year old to have breast development and discharge, but it can happen. This may be precocious puberty, you should have the child checked out by a doctor.
buds at the beginning of puberty is a slight bump that's hard and may be sore
there is no normal size of breast for any age it all depends on your genes you could have huge breast at the age of 14 or small breast. i am 15 and i have a 13 year old sister and her breast are bigger than mine it all depends on your genes.
38B