Small boobs

Hey guys, I know there's nothing I can do to change my boob size bar plastic surgery, but I'm 16 nearly 17 and I'm stuck between an A and a B cup size. Part of me likes it because it's handy but the larger part of me hates it because nearly all of my friends have larger chests and it makes me feel like I'm not even female... And I'm quite skinny overall so I just feel like I'm not attractive (which I know shouldn't be a big deal and I shouldn't base my view of myself off of the view of others but sometimes I can't help it 😂) It just makes me so insecure sometimes and I don't really know how to accept it and grow to love it. Any tips confidence-wise?