Billboard Music Awards 2013 | Show highlights

Taylor Swift, center, performs at the Billboard Music Awards at the MGM Grand Garden Arena.  (Chris Pizzello / Invision / Associated Press)

Singer Selena Gomez performs onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Singer Miguel performs onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Singer Bruno Mars performs onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Musician Justin Bieber performs onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Recording artist Pitbull and singer Christina Aguilera perform onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Chris Brown performs at the 2013 Billboard Music Awards.  (Chris Pizzello / Invision / Associated Press)

Musician Prince performs onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Singer Kimberly Perry, center, and musician Neil Perry, right, of the Band Perry perform onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Singers Neil Perry, left, Kimberly Perry and Reid Perry of the Band Perry perform onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Akon, left, Ne-Yo and DJ David Guetta perform onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Jennifer Lopez is carried as she performs at the Billboard Music Awards.  (Chris Pizzello / Invision / Associated Press)

Singer Kacey Musgraves and another performer onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Justin Bieber, left, and Will.i.am perform onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Singer Taylor Swift performs with dance crew Jabbawockeez onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Host Tracy Morgan speaks onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)

Recording artist Ne-Yo performs at the 2013 Billboard Music Awards.  (Chris Pizzello / Invision / Associated Press)

Ed Sheeran performs onstage during the 2013 Billboard Music Awards.  (Ethan Miller / Getty Images)