No Doubt attend the American Music Awards.

Taylor Swift attends the American Music Awards.

Justin Bieber attends the American Music Awards.

Christina Aguilera attends the American Music Awards.

Nicki Minaj attends the American Music Awards.

Pink and husband Carey Hart attend the American Music Awards.

Carrie Underwood attends the American Music Awards.

Nashville star Hayden Panettiere attends the American Music Awards.

Kelly Rowland attends the American Music Awards.

Gloria Estefan and Emilio Estefan attend the American Music Awards.

Cyndi Lauper attends the American Music Awards.

 Will.i.am  attends the American Music Awards.

 Luke Bryan and wife Caroline attend the 40th American Music Awards.

 Colbie Caillat attends the American Music Awards.

Carly Steele attends the American Music Awards.

Amy Heidemann and Nick Noonan of Karmin attend the American Music Awards.

Lance Bass arrives at the American Music Awards.

Jordin Sparks and Jason Derulo attend the American Music Awards.

Hillary Scott of Lady Antebellum attends the American Music Awards.

Chester Bennington and Mike Shinoda of Linkin Park attend the American Music Awards.

Psy attends the American Music Awards.

Carly Rae Jepsen attends the American Music Awards.

Chris Brown attends the American Music Awards.

Gavin DeGraw attends the American Music Awards.

Neon Trees attends the American Music Awards.

Kerry Washington attends the American Music Awards.

The Backstreet Boys attend the American Music Awards.

Ke$ha attends the American Music Awards.

 Heidi Klum attends the American Music Awards.

Psy attends the American Music Awards.

50 Cent attends the 40th American Music Awards.

Jenny McCarthy attends the American Music Awards.

Ludacris, Chris Brown and Swizz Beatz attend the American Music Awards.

Carly Rae Jepsen hangs with fans on the red carpet at the American Music Awards.

Nicki Minaj blows a kiss to her fans at the American Music Awards.

Carly Rae Jepsen and Will.i.am attend the American Music Awards.

Pink meets her fans at the American Music Awards.

Taylor Swift waves to fans from the red carpet at the American Music Awards.

Jordin Sparks poses with fans at the American Music Awards.

Mayra Veronica attends the American Music Awards.

Chris Brown poses with fans at the American Music Awards.

Psy hangs out with fans on the red carpet at the American Music Awards.

Chris Brown and Swizz Beatz attend the American Music Awards.

Justin Bieber signs autographs at the American Music Awards.

Nicki Minaj and Christina Aguilera attend the American Music Awards.