Fifth Harmony nearly set the Billboard Music Awards [1] on fire when they took the stage on Sunday night. In addition to their supersexy dance moves, the ladies performed their hit single, "Work From Home," — and it did not disappoint. With a special guest appearance by Ty Dolla $ign, Fifth Harmony proved that they definitely know how to "work, work, work [2]." Get ready to whip your hair back and forth, and watch the video above now.