A fight broke out at a Lily Allen concert when she performed at the O2 Arena in London last night. She had exited the stage when the fight broke out and when she returned she said, "It's fucking sick, and you lot should be ashamed of yourself."

Watch the fight and Lily's tsk-tsking of the rowdy fans.

PopEater reports that her July 4th show will be her last show ever as "Lily Allen."