2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Caroline Bryan and Luke Bryan arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Actress Julianne Hough arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Press Room

LAS VEGAS, NV - MAY 20: Singer Stevie Wonder poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: (L-R) Actors Ty Burrell and Julie Bowen arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Mayra Veronica arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: (L-R) Lacey Schwimmer, singer Joey Fatone and dancers Anya Garnis and Carson Kressley arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Miley Cyrus arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: NHL hockey player Mike Fisher arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Musician John Legend arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Katy Perry (R) and her grandmother arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Carly Rae Jepsen arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Carly Rae Jepsen arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: NHL hockey player Mike Fisher and singer Carrie Underwood arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Carrie Underwood arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Miley Cyrus arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Miley Cyrus arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Nelly Furtado arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Usher arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Taylor Swift, winner of the Woman of the Year award, poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Justin Bieber arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Justin Bieber arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Actress Julianne Hough arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Lisa Marie Presley arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Press Room

LAS VEGAS, NV - MAY 20: Redfoo and Sky Blu of LMFAO, winners of the Hot 100 Song of the Year award, pose in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Caroline Bryan and Luke Bryan arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Caroline Bryan and Luke Bryan arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Caroline Bryan and Luke Bryan arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Press Room

LAS VEGAS, NV - MAY 20: Performer Carly Rae Jepsen poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Press Room

LAS VEGAS, NV - MAY 20: Performer Carly Rae Jepsen poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Press Room

LAS VEGAS, NV - MAY 20: Singer Taylor Swift, winner of the Woman of the Year award, poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Press Room

LAS VEGAS, NV - MAY 20: Singer Jason Derulo poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Gladys Knight arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Actress Zooey Deschanel arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Carrie Underwood arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

2012 Billboard Music Awards News Conference With CeeLo Green

LAS VEGAS, NV - APRIL 27: Recording artist CeeLo Green attends a news conference at Caesars Palace announcing his live performance at the "2012 Billboard Music Awards in Las Vegas" on April 27, 2012 in Las Vegas, Nevada. The show will be held at the MGM Grand Garden Arena in Las Vegas on May 20. (Photo by Ethan Miller/Getty Images for APR)

2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: NHL hockey player Mike Fisher and Singer Carrie Underwood arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)