Justin Bieber, Rochelle Wiseman, Madonna: Celeb pictures January 12

Today's celebrity pictures include Madonna donning shades as she slips out of the Mayfair Arts Club after her UK premiere of W.E., an ecstatic Rochelle Wiseman flashing her impressive engagement ring with fiancé Marvin Humes, and Brooke Shields and Twiggy looking slightly worse for wear as they leave The Wolseley.

Meanwhile, Russell Brand dines at Nobu with a group of friends, and One Direction's Harry Styles and Louis Tomlinson pose with their hired camper van near Anglesey in Wales.

Across the pond, Keira Knightley leaves her hotel with Klaxons boyfriend James Righton in New York, Chace Crawford and Ella Rae Peck smooch on the set of Gossip Girl, and Justin Bieber gets to grips with a dancing robot in Las Vegas.

In LA, Vanessa Hudgens snuggles up to beau Ashley Butler, while an umkempt-looking Ben Affleck takes his dog for a walk.