One Direction Gets Felt Up & Sings for Niall...I mean, Ellen!




One Direction Gets Felt Up




One Direction Performs 'What Makes You Beautiful'


One Direction Performs 'Live While We're Young'


Exclusive! One Direction Backstage Pass


Exclusive! Thrown Onstage at One Direction


One Direction Talk Dating


Exclusive! Ellen and One Direction Commercial Break








Niall is the best with that booty and the willingness to use it.

Sources:1, 2, 3, 4, 5, 6, 7
I screencapped the pictures myself so there is no source for them.