Watch One Direction and the cast of Anchorman 2 sing "Afternoon Delight":
The British boyband took the opportunity to poke fun at their own stardom. Paul played a One Direction superfan, getting competitive with a group of young girls while waiting for the guys to give him an autograph.
Watch 'One Direction Concert Line':
The boys performed "Story Of My Life" and another song of their new album called "Through The Dark."
Watch One Direction perform "Story Of My Life":
Watch "Through The Dark":