Catherine Zeta-Jones, Mary J Blige, Tom Cruise and Julianne Hough

'Rock Of Ages' stars Tom Cruise, Russell Brand, Alec Baldwin, Catherine Zeta-Jones, Mary J Blige, Malin Akerman and Julianne Hough were present, as were a host of other big names, including a hunky Josh Duhamel (Fergie's husband) in full rock regalia.