The 2014 Billboard Music Awards has a huge problem on its hands. Breakout stars Ariana Grande and Iggy Azalea will perform their hit single "Problem" at this year's ceremony, being held on Sunday, May 18 in Las Vegas. Azalea is also scheduled to perform her song "Fancy" during the live ABC telecast.
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Grande and Azalea join previously announced performers including Miley Cyrus, Ricky Martin, Jennifer Lopez, Pitbull, 5 Seconds of Summer, Florida Georgia Line, Jason Derulo, Imagine Dragons, Luke Bryan, John Legend and OneRepublic. Lorde will perform her new single "Tennis Court" for the first time on television, and Miranda Lambert and Carrie Underwood will do the same with their duet "Somethin' Bad."