November 18, 2012
Jordan Strauss photo

Justin Bieber arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Matt Sayles photo

Carly Rae Jepsen performs at the 40th Annual American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Matt Sayles/Invision/AP)

Matt Sayles photo

Ke$ha performs at the 40th Annual American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Matt Sayles/Invision/AP)

John Shearer photo

Taylor Swift accepts the award for favorite female artist - country at the 40th Annual American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by John Shearer/Invision/AP)

John Shearer photo

Nicki Minaj accepts the award for favorite album - rap/hip-hop �Pink Friday: Roman Reloaded� at the 40th Annual American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by John Shearer/Invision/AP)

John Shearer photo

Usher performs at the 40th Annual American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by John Shearer/Invision/AP)

Jordan Strauss photo

Christina Aguilera arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Jordan Strauss photo

Kelly Rowland arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Matt Sayles photo

Ryan Seacrest presents the award for favorite male artist - pop/rock at the 40th Annual American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Matt Sayles/Invision/AP)

Jordan Strauss photo

Musical group No Doubt, from left, Adrian Young, Gwen Stefani, Tony Kanal and Tom Dumont arrive at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Jordan Strauss photo

PSY arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Jordan Strauss photo

Ke$ha arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Jordan Strauss photo

Hayden Panettiere arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)