Also in the capital, Little Mix's Leigh-Anne Pinnock enjoyed a night at club Amika, while fellow X Factor finalist Amelia Lily performed to a sell-out crowd as she supported Girls Aloud on their 'Ten' tour.
In the US, Andrew Lincoln was at the Saban Theatre in Beverly Hills as PaleyFest honours The Walking Dead. Mariah Carey was in New York ready to appear on Late Night with Jimmy Fallon and Nicki Minaj answered questions at the Nicki Minaj Kmart Shop Your Way media event.
Elsewhere, Helen Flanagan arrived at Dublin Airport ahead of her appearance on The Saturday Night Show, Leonardo DiCaprio attended a press conference for Django Unchained in Tokyo and Jessica Chastain was on the front row at the Viktor & Rolf show for Paris Fashion Week.
See all today's pictures in our gallery below:
Nicole Scherzinger looks chic in a black biker jacket as she leaves 'C' restaurant in Central London.
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