The Aviator star scores an award at the U.K.'s equivalent of the Oscars. Plus: Mischa Barton, Clive Owen, Britney Spears and more

SAY BOO

Alicia Keys and Usher work their vocal magic on each other Thursday while rehearsing their Grammy-nominated duet "My Boo" for a party thrown by record exec Clive Davis. For Sunday's Grammys, Keys will team up with another big name: Oscar nominee Jamie Foxx.