Singer Jordin Sparks arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas. (Frazer Harrison / Getty Images)
Singer Miley Cyrus. (Frazer Harrison / Getty Images)
Singer Brandy Norwood. (Frazer Harrison / Getty Images)
NHL player Mike Fisher and singer Carrie Underwood. (Frazer Harrison / Getty Images)
Singer Katy Perry and her grandmother. (Frazer Harrison / Getty Images)
Singer Gavin DeGraw. (Frazer Harrison / Getty Images)
Singer Robin Thicke. (Frazer Harrison / Getty Images)
Actress and singer Zooey Deschanel. (Frazer Harrison / Getty Images)
Actress Julianne Hough. (Frazer Harrison / Getty Images)
Singer Justin Bieber. (Frazer Harrison / Getty Image)
Singer and recent “Dancing With the Stars” contestant Gladys Knight. (Frazer Harrison / Getty Images)
Presenter and performer Natasha Bedingfield. (Frazer Harrison / Getty Images)
Singer Josiah Bell and actress Jurnee Smollett. (Frazer Harrison / Getty Images)
Model Chrissy Teigen and musician John Legend. (Frazer Harrison / Getty Images)
Musician Kris Kristofferson and singer Joey Fatone. (Frazer Harrison / Getty Images)
Model Amber Rose. (Frazer Harrison / Getty Images)
Singer Usher Raymond. (Frazer Harrison / Getty Images)
Redfoo and Sky Blu of LMFAO, winners of the Hot 100 Song of the Year award. (Frazer Harrison / Getty Images)
Performer Carly Rae Jepsen. (Frazer Harrison / Getty Images)
Singer Taylor Swift, winner of the Woman of the Year award. (Frazer Harrison / Getty Images)
Presenter Robin Thicke. (Frazer Harrison / Getty Images)
Singer Jason Derulo (Frazer Harrison / Getty Images)
Rapper Swizz Beatz and singer Alicia Keys. (Frazer Harrison / Getty Images)
