Celebrities arrive at the 2011 American Music Awards at the Nokia Theatre, Los Angeles, California.

Celebrities arrive at the 2011 American Music Awards at the Nokia Theatre, Los Angeles, California.

Teen pop star Justin Bieber has revealed that he will be performing on this weekend's UK X Factor.

The 17-year-old took to his Twitter page to reveal he'll be singing his Christmas single, Mistletoe, for fans on Sunday's results show.

Bieber, who is currently promoting his Christmas album Under the Mistletoe, wrote: "UK!!! X Factor this week. #Mistletoe"

Justin recently performed on the German X Factor on November 15 and is rumoured to be lined up to sing on the series finale of the US X Factor on December 22.