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8 June 2012, 16:20
The 'Mr. Know It All' star took to the stage this afternoon in preparation for her performance at Wembley Stadium.
Kelly Clarkson has just wrapped up her soundcheck on stage at Wembley Stadium for Capital FM's Summertime Ball 2012.
The 'Dark Side' singer's preparations were watched by fellow performers Lawson who were full of praise for the star during her performance.
Bass player of the boy band Ryan tweeted: "Watching Kelly Clarkson soundcheck she's unbelievable!"
Dressed in a black coat with her new blonde hair style tied up the star ran through some of her biggest hits inside the empty stadium as the sun peaked through the clouds.
The former American Idol winner joins a bill which includes the likes of Ed Sheeran, Usher, Coldplay, Justin Bieber and Katy Perry.
The Wanted, Cover Drive and Lawson have also already been on stage soundchecking throughout the day as they get ready for the show tomorrow (9th June).
Capital FM is coming live from the Summertime Ball at London's Wembley Stadium on 9th June.
Keep your eye on the ball by heading to our Summertime Ball area for all the latest news, photo galleries and interviews from this year's event.