LOS ANGELES, CA - NOVEMBER 20: Singers Taylor Swift (L) and Katy Perry arrive at the 2011 American Music Awards held at Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Lester Cohen/AMA2011/WireImage)
LOS ANGELES, CA - NOVEMBER 20: Singers Taylor Swift (L) and Katy Perry arrive at the 2011 American Music Awards held at Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Lester Cohen/AMA2011/WireImage)