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LOS ANGELES, CA - NOVEMBER 20: Singer Katy Perry arrives at the 2011 American Music Awards held at Nokia Theatre L.A. Live on November 20, 2011 in Los Angeles, California. (Photo by Barry King/FilmMagic)

LOS ANGELES, CA - NOVEMBER 20:  Singer Katy Perry arrives at the 2011 American Music Awards held at Nokia Theatre L.A. Live on November 20, 2011 in Los Angeles, California.  (Photo by Barry King/FilmMagic)