At your age it is common to be self-conscious about your breast size. Be aware that 34B is not as large as you imagine. You have a few years left before you are done growing in hieght, perhaps you will seem more proportioned when you are a little taller. If you get to a 38C, then it might be large enough to warrant surgery. Wait until you are 21 to make that decision, by then you are sure to have all of your developing and growing out of the way plus you are mature enough to make that decision. Many insurance companies cover breast reduction to relieve tension on the back. When you are older, you might consider it. For now, wear clothes that don't bring out your breasts. Tight shirts are not recommended.
Think of it this way. Given the choice, would you choose a girl with smaller breasts or a girl with bigger breasts? You would pick the woman with the bigger breasts, wouldn't you? It's the same for women.
Yes, every girl has breasts.
Girls may have small breasts but they are still girl breasts.
Every girl has hair on her breasts
By being a girl.
my being a girl
big juicy ones
This all depends on the individual girl. Some girls will have already developed breasts by the time they are 13, and other may not have even started. This is regulated by when / how long you have been going through puberty for. Generally, most girls who are 13 are around a A- to a B-Cup. Mind you, some can be as large as a D-, while other might be smaller than a AA-Cup. There is really no "normal" standard for this.
if you have entered puberty, your breasts will usually be sore from time to time
To be a hooters girl you must be female and have very large breasts.
no
A girl's breasts are usually fully developed by the late teens to 20s.