Also in the capital, X Factor reject Carolynne Poole performs live at G-A-Y at Heaven nightclub along with Leona Lewis, and Melanie Masson appears on Daybreak after being the latest finalist to leave the show.
In Cardiff, Doctor Who's Matt Smith casts his hand prints in cement as he makes his first visit to The Doctor Who Experience in Cardiff Bay to unveil a new exhibit of monsters and props from series 7.
Meanwhile across the pond in LA, a frail-looking Danielle Spencer is spotted out and about following reports she's split with husband Russell Crowe, and Christina Aguilera sports bright red hair as she visits Mr Bones's Pumpkin Patch.
And in New York, Julianne Moore and Chloe Grace Moretz attend the Comic Con Presents MGM / Sony Screen Gems re-make of Carrie.
Rita Ora wears a halter-neck white gown at the Bergdorf Goodman 111th anniversary celebration in New York.
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