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Justin Bieber is coming to town as Santa's little helper

Justin Bieber has become part of a beloved festive cartoon after inserting an animated version of himself in the stop-motion classic Santa Claus Is Comin' To Town.

The Baby singer appears alongside a young St. Nicholas in a revamp of the 1970 kids film, which features the voices of Mickey Rooney and Fred Astaire.

The clever animation doubles up as the video for Bieber's Christmas cover Santa Claus Is Coming To Town, which appears on his new holiday album Under The Mistletoe.

In the promo, the pop star helps Santa prepare for Christmas Eve, while showing off his snowboarding skills.

Bieber's first holiday album is expected to debut at number one in the charts on Wednesday (09Nov11).