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'Price Tag' singer Jessie J rocks purple hair at the live show in London, where she performs for Wretch 32, Ellie Goulding and Tinchy Stryder.
Jessie J performs at the launch of BBM Music and the Blackberry 7 Smartphone Collection at Sketch in London.
Jessie J ditches her favoured Mystic Meg black bob and goes back to purple hair.
Jessie J rests her dodgy foot on the chaise longue.
The 'Price Tag' singer sports a purple catsuit at the show.
Jessie J blings up the boot supporting her broken foot.
Jessie J rocks out on her extra-wide thrown.
The 'Who's Laughing Now' singer coordinates her hair and outfit.
Jessie J was cheered on by Ellie Goulding, who will replace her as the support act on Katy Perry's US tour later this year.
Jessie performed hits from her 'Who You Are' album.
Jessie sang for a celebrity crowd, including Wretch 32, Tinchy Stryder and Rizzle Kicks.
Jessie J's cosmic catsuit was made by Christopher Kane.
Pillow fight anyone?
Jessie poses with a Blackberry at the launch event in London.
Jessie says, "Cheese!"
Tom Fletcher, Dougie Poynter and Danny Jones show their love for Jessie J on the night.
Former Pussycat Doll Kimberley Wyatt is happy to be at the Blackberry bash where Jessie was performing.
Wretch 32 poses for a picture as he shows up to support Jessie J.