<b>Photos:</b> 2010 American Music Awards

Rihanna performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Rihanna performs at the 38th Annual American Music Awards.  (Matt Sayles/AP)

Singer Rihanna performs at the 2010 American Music Awards.  (Mario Anzuoni/Reuters)

Rihanna performs at the 38th Annual American Music Awards.  (Matt Sayles/AP)

Rihanna performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Rihanna performs at the 38th Annual American Music Awards.  (Matt Sayles/AP)

Rihanna performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Rihanna performs a medley of “Love the Way You Lie,” “What’s My Name” and “Only Girl in the World” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Singer Rihanna performs at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Singer Rihanna performs at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Rihanna performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Rihanna performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Singer Enrique Iglesias performs “I Like It” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Enrique Iglesias performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Pitbull, left, and Enrique Inglesias perform “I Like It” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Miley Cyrus performs “Forgiveness and Love” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Fergie of The Black Eyed Peas performs “The Time” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Fergie, of The Black Eyed Peas, performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

The Black Eyed Peas perform “The Time” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Katy Perry begins her performance   (Matt Sayles/AP)

Singer Katy Perry performs “Firework” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Katy Perry performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Katy Perry performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Singer Katy Perry performs “Firework” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Katy Perry performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Katy Perry performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Katy Perry performs at the 38th Annual American Music Awards.  (Matt Sayles/AP)

Katy Perry performs at the 38th Annual American Music Awards.   (Matt Sayles/AP)

Singer Bon Jovi performs a medley of hits at the 2010 American Music Awards.  (Mario Anzuoni/Reuters)

Justin Bieber performs at the 38th Annual American Music Awards.  (Matt Sayles/AP)

Justin Bieber performs with a choir at the 38th Annual American Music Awards.  (Matt Sayles/AP)

Diddy and Dirty Money perform “Coming Home” at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Singer Rihanna accepts the award for Favorite R&B Female Artist from presenters Nicki Minaj, left, and Trey Songz.  (Mario Anzuoni/Reuters)

Singer Rihanna accepts the award for Favorite R&B Female Artist at the 2010 American Music Awards.   (Mario Anzuoni/Reuters)

Brad Paisley poses with his award for country favorite male artist backstage at the 38th Annual American Music Awards.  (Chris Pizzello/AP)

Taylor Swift accepts the award for Favorite Country Female Artist at the 2010 American Music Awards.  (Mario Anzuoni/Reuters)

Jessica Alba poses backstage at the 38th Annual American Music Awards.  (Chris Pizzello/AP)

Actress Jessica Alba presents the award for Favorite Country Female Artist at the 2010 American Music Awards.  (Mario Anzuoni/Reuters)

Singer Katy Perry arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Katy Perry arrives at the 38th Annual American Music Awards.  (Chris Pizzello/AP)

Katy Perry arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Katy Perry arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Singer Katy Perry arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

The Black Eyed Peas, from left, Apl.de.ap, Taboo, Will.i.am and Fergie arrive at the 38th Annual American Music Awards.  (Chris Pizzello/AP)

Rihanna arrives at the show.   (Chris Pizzello/AP)

Rihanna arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Rihanna arrives at the 38th Annual American Music Awards.  (Chris Pizzello/AP)

Singer Rihanna arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Rhianna arrives at the 38th Annual American Music Awards.  (Chris Pizzello/AP)

Heidi Klum arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Gavin Rossdale arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Singer Miley Cyrus arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Singer Miley Cyrus gets assistance with the train of her dress.   (Danny Moloshok/Reuters)

Miley Cyrus arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Singer Avril Lavigne arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Avril Lavigne arrives at the 38th Annual American Music Awards.  (Chris Pizzello/AP)

Skater Johnny Weir arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Nathan Fillion, left, and a guest arrive at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

From left, Willow Smith, Jada PInkett Smith and Jaden Smith arrive at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Willow Smith, left, and Jada Pinkett Smith arrive at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Jada Pinkett Smith, left, and Jaden Smith arrive at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Jada Pinkett Smith arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Christina Milian arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Ke$ha arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Mandy Moore arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Actress Julie Benz arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Julie Benz arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Julie Benz arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Michael Chiklis arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

John Legend and Christine Teigen arrive at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Country singer Jason Aldean and his wife Jessica arrive at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Singer Nicki Minaj arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Singer Natasha Bedingfield arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Singer Natasha Bedingfield arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Cheryl Crowe arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Singer Keri Hilson arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Singer Keri Hilson arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Pink and Carey Hart arrive at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Actress Jenny McCarthy arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Actress Stana Katic from the television show “Castle” arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Actress Stana Katic arrives at the 2010 American Music Awards.  (Danny Moloshok/Reuters)

Actress Stana Katic arrives at the 2010 American Music Awards.  (Danny Moloshok/Reuters)

Taylor Swift arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Taylor Swift arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Singer Taylor Swift arrives at the 2010 American Music Awards.  (Danny Moloshok/Reuters)

The Black Eyed Peas arrive at the 2010 American Music Awards.  (Danny Moloshok/Reuters)

Fergie arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Singer Fergie of The Black Eyed Peas arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Members of Backstreet Boys and New Kids on the Block arrive at the 38th Annual American Music Awards. From left, are Donnie Wahlberg, A. J. McLean, Joey McIntyre, Nick Carter, Jordan Knight, Howie Dorough, Danny Wood, Brian Thomas Littrell and Jonathan Knight.   (Chris Pizzello/AP)

Singer Usher arrives at the 2010 American Music Awards.   (Danny Moloshok/Reuters)

Hillary Scott of the band Lady Antebellum arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

John Legend, right, and Christine Teigen arrive at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

The band Train, from left, Scott Underwood, Patrick Monahan and Jimmy Stafford arrive.   (Chris Pizzello/AP)

British hip hop producer Alex da Kid arrives at the 2010 American Music Awards.  (Danny Moloshok/Reuters)

Taio Cruz arrives at the 38th Annual American Music Awards.  (Chris Pizzello/AP)

Phoebe Price arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

The Band Perry, from left, Neil Perry, Kimberly Perry and Reid Perry arrive at the 38th Annual American Music Awards.   (Chris Pizzello/AP)

Kelly Osbourne arrives at the 38th Annual American Music Awards.   (Chris Pizzello/AP)