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11 June 2012, 12:14 | Updated: 11 June 2012, 12:25
The 'Never Say Never' star posed doing the "Call Me Maybe' hand gesture backstage at the Ball.
Justin Bieber was pictured posing with Carly Rae Jepsen and Kelly Clarkson backstage at Wembley Stadium on Saturday night (9th June) after all three artists performed for the Capital FM Summertime Ball 2012.
"CALL ME MAYBE with @JustinBieber and @Kelly_Clarkson" Carly tweeted alongside the picture.
"Dark Side' singer Kelly also posted a similar picture after getting to meet both Carly and Justin for the first time, and described both artists as "so sweet".
Justin performed a crowd-pleasing set at the Summertime Ball, which included hits like 'Baby' and 'Somebody To Love', before introducing Carly on stage as his surprise guest to perform "Call Me Maybe' for the 80,000 fans in attendance.
Earlier in the evening Kelly also took to the stage to play some of her biggest songs like 'Since U Been Gone', 'My Life Would Suck Without You' and her new single 'Dark Side'.
Check out a picture of Justin Bieber posing with Kelly Clarkson and Carly Rae Jepsen at the Summertime Ball 2012 below (Credit: Twitter):
View highlights of Justin Bieber's Capital FM Summertime Ball 2012 performance below as well as full highlights of Saturday's Wembley Stadium show: