2U David Guetta Feat. Justin Bieber
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21 Celebrity Yearbook Pictures That'll Be Etched Into Our Minds FOREVER!
He might have sung about being lazy - but this is one star who never slacks when it comes to style. His laid-back vocal groove is also echoed in his oozing charisma which makes many a follower shake at the knees. What he lacks in height he makes up for in style - and hair - and we're sure that if there was a "how to be cool" class in school he would have been teaching it!