Justin Bieber gives girlfriend Selena Gomez a kiss as they arrive at the 2011 American Music Awards held at the Nokia Theatre L.A. LIVE in Los Angeles on Sunday, Nov. 20.
KISS band member Gene Simmons and his wife, actress Shannon Tweed, show off their wedding rings as they arrive for the ceremony. The pair recently married after nearly 30 years together.
Former "American Idol" contestant Adam Lambert arrives for the American Music Awards.
Singer Nicki Minaj opened the show with her performance.
Singer Justin Bieber performs "Under the Mistletoe."
Actress Jenny McCarthy speaks onstage at the 2011 American Music Awards.
Rocker Daughtry, who is a former "American Idol" contestant, performs.
Jennifer Lopez performs "Papi" and her hit "On the Floor."
Singer Taylor Swift receives congratulations for winning the favorite country female artist award.
Singer Katy Perry plays the guitar as she performs "The One That Got Away."
From left, Michael Madden, James Valentine, Adam Levine, Jesse Carmichael and Matt Flynn of Maroon 5 pose for a portrait. The musicians won for favorite group.
Singer will.i.am performs in a glow-in-the-dark costume for his new single, "Hard."
The first "American Idol" champ, Kelly Clarkson, performs her hit "Mr. Know It All."
Singer Christina Aguilera performs at the 2011 American Music Awards ceremony.
Singer Chris Brown performs "All Back" and "Say It Wi th Me."
The final performance of the night came from, from left, David Hasselhoff, Internet star Keenan Cahil, and SkyBlu and DJ Redfoo of pop group LMFAO, with everyone stripping down to smiley-face underwear.