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!
As we're getting extremely close to naming the next "American Idol," the show kicked things up a notch when they invited The Chainsmokers to the show for a "#Selfie" spree.
After Ryan Seacrest introduced the dance music duo, the guys turned up their song as they ran out into the crowd to take a ton of selfies with audience members. The guys even got some with judges Jennifer Lopez and Harry Connick, Jr.! The judges quickly got the selfie fever and started snapping away too.
Check it out below: