Little Mix, Rihanna, Scarlett Johansson: Celebrity pictures December 13

Today's celebrity pictures include screen siren Scarlett Johansson, Elle Fanning and Matt Damon at their premiere of Cameron Crowe's We Bought A Zoo in New York. Cocoon actor Steve Guttenberg is honoured on the Hollywood Walk of Fame and actress Jessica Biel hosts a charity gala in New York.

Meanwhile back across the pond, I'm a Celebrity runner-up Mark Wright attends the Manchester United for Unicef gala dinner in Manchester, and David Walliams and supermodel wife Lara Stone dine with Gary Barlow and his wife Dawn at exclusive eatery Scott's in London.

Fearne Cotton and X Factor winners Little Mix arrive at the BBC Radio 1 studios in London, and over in Milan, Rihanna leaves the Emporio Armani store following reports she is teaming up with the Italian Fashion House to release her first fashion line.