Kim Kardashian! Katy Perry! See the stars sure to wish the singer a very happy birthday when he turns 17 on March 1!
Credit: Courtesy Justin Bieber
Updated: Tuesday Mar 01, 2011 | 06:00 AM EST
By: Cara Lynn Shultz
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After performing together at the Grammys, Usher – whom Bieber dubbed his "big bro" – joined his protégé at the Paris premiere of Bieber's documentary concert film, Never Say Never.
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