I'm 11 and feel really insecure about my chest thing because it's too big I really hate it I see girls with flat chests I actually want that I don't know why I just do! Please.any advice on how to get small ones please give it to me! xxxxx

There is no way to make them smaller other than surgery. And no surgeon is going to do it at your age.

Its probable your body will grow and your breasts will fit more proportionately as you grow.

If they are really noticeably large, ask mom to get you a bra that minimizes the size or wear looser clothing.