Breast sizes

Hey people. So idk what's the right tag for this. But I'm having some difficulties. I'm 17, 5ft1, 56kg and I wear a size 34C bra.

But I don't ig have saggy breasts so mine don't lay together and all nice and create cleavage like everyone else. Mine sit off to the side and i always look flat bc of it. I've gotten insanely insecure over it

I've a friend who's a 34B but her breasts look sm bigger and fully then mine, she's more fat then me so idk if that's why? But hers sit facing forward and sit nicely. Mine are wonky and point out at the sides. Then another friend, she's the same size as me but hers also look sm bigger and better but again she's heavier then me.

How do I help this? Do I need to just overcome my thoughts, or mabey if I gained more weight that would help? I went out to a pub yesterday so yk we got all dressed up I just look super flat in all the photos :(