Billboard Music Awards

Check out the Best and Worst Moments at the 2015 Billboard Music Awards that made us smile, laugh, tear up or even cause a side-eye or two.

Britney Spears' comeback is in full effect. At the Billboard Music Awards on Sunday night (May 17), the veteran pop darling brought Iggy Azalea along for the ride to perform their new collaboration "Pretty Girls."

On Sunday (May 17) at the Billboard Music Awards, Kanye West opted to let his music speak for itself, delivering one of the standout performances of the night.

Nicki Minaj is the one of the most genre-bending rappers of this generation -- that much we know for certain -- and she kept the sentiment going Sunday night (May 17) at the Billboard Music Awards, performing "The Night Is Still Young" and "Hey Mama" with EDM superstar David Guetta.

Pitbull brought Miami to Las Vegas at the Billboard Music Awards while Chris Brown delivered the moves during their performance of "Fun" on Sunday night (May 17).

Sam Smith was a big winner at the 2015 Billboard Music Awards on Sunday night (May 17) in Las Vegas, but unfortunately, he was unable to attend the ceremony to accept his award. However, he did give an acceptance speech in a surprising way.

Chris Brown tends to show up to awards show red carpets solo but he chose to do things a little differently when he appeared at the 2015 Billboard Music Awards on Sunday evening (May 17). The “How Many Times” singer chose a rather cute, pint-sized date rather than going for some sexy eye candy...

Singer Estelle participated in a two-song medley in honor of Fox’s juggernaut series Empire and its accompanying soundtrack at the 2015 Billboard Music Awards on Sunday (May 17).

Meghan Trainor was the first artist to bring some heartfelt lyrics to the 2015 Billboard Awards and she brought crooner John Legend along for the ride on Sunday evening (May 17).

After taking the stage to assist Fall Out Boy at the Billboard Music Awards earlier in the night, Wiz Khalifa returned to perform his own hit "See You Again," off the Furious 7 soundtrack.