Ariana Grande & Iggy Azalea Perform 'Problem' at Billboard Music Awards 2014 (Video)

Ariana Grande and Iggy Azalea have the crowd captivated with their performance of “Problem” at the 2014 Billboard Music Awards held at the MGM Grand Garden Arena on Sunday (May 18) in Las Vegas, Nev.

Before the 20-year-old entertainer took the stage at the show, Iggy performed her hit “Fancy” alongside Charli XCX. Both performances were so rockin’ – you must watch below!

“thank you @billboard #bbmas for having me and my loves for cheering me on I love u” Ariana tweeted after she hit the stage.