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!
Sia may have a harder time shunning the spotlight now that she has a number one album.
The Australian pop singer's latest release 1000 Forms Of Fear is making its debut in the top spot on the Billboard 200.
Congratulations to Sia! We bet she'll be swinging from some chandeliers to celebrate!