Musician Justin Bieber poses for a portrait while promoting his new book, "Justin Bieber: First Step 2 Forever", in Los Angeles, Sunday, Oct. 31, 2010. (AP Photo/Matt Sayles)

Justin Bieber arrives for the Brit Awards 2011 at The O2 Arena in London, Tuesday, Feb. 15, 2011. (AP Photo/Joel Ryan)

US singer Justin Bieber arrives for the European premiere of his film 'Never Say Never', Wednesday, Feb. 16, 2011, held at the o2 in London. (AP Photo/Joel Ryan)

Justin Bieber talks to Rihanna during the second half of the NBA basketball All-Star Game on Sunday, Feb. 20, 2011, in Los Angeles. (AP Photo/Mark J. Terrill)