Celeb Double Takes!

From Gwen Stefani to Justin Bieber, stars strike a pose alongside their look-alikes

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DIDDY

I can't believe it's not ... Diddy! "I didn't expect them to get this close to it," the hip-hop mogul marveled at the December 2009 unveiling of his likeness at New York's Madame Tussauds. "I'm definitely pleased."