Also in the capital, Hollywood actor Chris Hemsworth is spotted out and about in his sports gear, and Brighton Rock actress Andrea Riseborough wears a plunging dress as she arrives at the British Independent Film Awards 2012.
Meanwhile, Maria Fowler promotes The Only Way Is Essex Celebrity Bronzer in a thong at the Birmingham NEC Fashion Show.
In Germany, Rihanna wears a white halterneck croptop and unusual sunglasses as she sings on German show Wetten, Dass at Rothaus Arena, and in Dubai, Katy Perry dons latex as she performs at the World Parachuting Championships Closing Ceremony.
And in the US, Justin Bieber shows off his new owl tattoo at the Y100's Jingle Ball 2012 at the BB&T Centre in Miami, and Beyoncé and Jay-Z attend the The Wrinkles of the City: Havana Cuba event at the Standard Hotel, Miami Beach.
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Copyright: Rex Features Matthew Taylor/Rex Features
