Kelly Osbourne Celebrates Her 40th Birthday with ... Express Concern for the Pop Star Kelly Osbourne Regrets Quitting Music: ‘Thought About What My Life Would Have Been Like If I Didn’t ...

The pair's first encounter came when Slipknot toured in 1999 with Ozzfest, the music festival founded by her parents, Ozzy Osbourne and Sharon Osbourne. Related: Kelly Osbourne and Sid Wilson's ...