Cath in the City on We Heart It. http://weheartit.com/entry/48920978/via/the_phoenix_inside_of_me
Dormitorio de Blair Waldorf de Gossip Girl
The first picture is what a real American Pitbull terrier looks like. They are not blue coated and heavy looking and instead lean with a muscular figure, not bulky.
The second is what an American Bully looks like. They are most commonly blue coated and very heavy and bulky structured dogs with larger heads.
They are two completely different breeds, learn the difference please.