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Justin Bieber was joined onstage by a host of famous faces in New York last night including Miley Cyrus.
Bieber was performing at the city's Madison Square Garden venue in a concert that will be filmed for his forthcoming 3-D biopic.
As you can see from our picture, Miley certainly got dressed up for the night.
Other stars who joined Justin onstage included Usher, Ludacris, Boyz II Men, Sean Kingston and Karate Kid star Jaden Smith.
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