'Celeb Apprentice' Star Aubrey O'Day Sued -- Please, Stop Singing.

Aubrey O'Day's big mouth has landed her in hot water again ... only this time it's not because of what she said ... it's what she sang. The "Celebrity Apprentice" contestant is being sued over a segment in the finale of her Oxygen reality show, "All…

Keira Knightley Kelly Brook Kelly Carlson Kelly Clarkson