Celebrity pictures: Kristen Stewart, Miley Cyrus, 'Artist' dog Uggie
Meanwhile, Javier Bardem attends the Sons of the Clouds photocall in Madrid, Kim Kardashian arrives at the Radio 1 Studios in Central London ahead of boyfriend Kanye West, and a lime green Lady GaGa waves to fans in Taipei, Taiwan.
In the US, a slim Miley Cyrus goes for lunch with her mother Tish in Miami, and in New York, Golden Girl Betty White is greeted by The Artist's Uggie at an evening held in her honour.
Also in the Big Apple, Glee couple Lea Michele and Cory Monteith stroll hand in hand, Battleship star Taylor Kitsch leaves his Manhattan hotel and Dancing with the Stars contestant Maria Menounos eats a slice of cake before her appearance on Good Morning America.
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