Monday, March 28, 2011 8:45am ET by  
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Jessie J celebrates 23rd birthday in style

Chart topper Jessie J celebrated her 23rd birthday yesterday, March 27, with a special performance at the Royal Albert Hall in London. 

The gig was for the Teenage Cancer Trust and the 'Price Tag' star strutted her stuff in front of the sold-out crowd as she supported UK rapper Tinie Tempah. Jessie J, who is known for her love of the social networking site Twitter, wrote to her fans this afternoon to apologize for her lack of birthday updates:

"Sorry I didn't tweet yesterday. Not intentional just was sooo busy :) I landed straight to soundcheck show met some amazing kids at T.C.T and then early night as I'm already on my way to Paris to do Taratata and La Musical :) #stompstompinparis"

Watch her mind-blowing performance of 'Mama Knows Best' from last night's Teenage Cancer Trust show here: