im 17, 6ft4" and weight around 17.5st...
my bodies in proportion with my size, but i myself suffer with "man boobs". depending on what tops i wear, they are more obvious.
mine seem to be more pointy [if you understand that] than normal looking boobs.
im happy with the way i am, and i dont feel like i want to change.
anyway, i know doing alot of exercise [and upper body exercise] can burn off the fatty tissue, but as marvel said, it could be a hormonal thing.