An all-star cast of heavy metal royalty came together to celebrate Ozzy Osbourne and Black Sabbath in the band's home town.

Slipknot's Sid Wilson proposed to Kelly Osbourne backstage at Ozzy Osbourne and Black Sabbath's final show on Saturday.

Kelly Osbourne, daughter of rock legend Ozzy Osbourne, is now engaged to Slipknot turntablist and keyboard player Sid Wilson.