JUST ADDED: 5 Seconds of Summer will be rocking the stage at this year's iHeartRadio Music Festival Village in Las Vegas! The band sat down with Ryan Seacrest to break the news. Click here to buy your tickets now, before they sell out!
Practice makes perfect!
Selena Gomez is giving fans a look behind-the-scenes of her rehearsals for "Come & Get It." Watch Selena practice the choreography with her dancers. Girl has moves!