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!
Jimmy Kimmel brought out his “lie detector” once again on Thursday to determine who has been naughty and who has been nice this Christmas season.
The results were adorable and hilarious.
Check out the video below!