AceShowbiz - Lily Allen was left stunned following a gig in Manchester, England earlier this month - after a cheeky fan pulled down his pants and exposed his bare behind. The "Smile" hitmaker had stepped off the stage after a show in the city on March 5 and was heading back to her hotel when a young male approached her.

And Allen got more than an autograph request from the man, when he pulled down his jeans and flashed his bottom at the singer. The star's security ensured Allen wouldn't have to witness the sight for too long, covering her eyes with her Chanel handbag to save her any embarrassment.

Lily Allen has repeatedly said that she plans to quit music. Recently, a source said the singer is actually not quite confident with her decision, telling Heat magazine "She's pretending she's confident about it, but secretly she's really scared. She's taking it very seriously. She doesn't want to fail again."