WATCH as a Justin Bieber lookalike tricks a Vegas nightclub into letting him perform on stage and run up a $10,000 bar tab.

Staff and partygoers at the five-star Wynn Las Vegas hotel were convinced that scammer Dylan Desclos, 29, was the real

Canadian pop star .

LA-based DJ Gryffin was performing at XS Nightclub, and was told that Bieber, 31, was in town, reports TMZ .

He heard that the superstar wanted to perform at his Saturday night show - and readily agreed, inviting him into the DJ booth.

Videos posted to social media show the shirtless, tattooed fake singing and dancing on stage in front of a packed crowd.

Almost everyone is recording the moment on their phones and appear totally fooled.

He belts out Bieber's hit Sorry and prances around, always wearing a pair of dark glass

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