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!
Chris Brown is expected to appear in court today.
The singer's probation was revoked Friday following reports of his arrest and ouster from a Malibu rehab facility. Brown has been getting treatment for anger management issues over the past several months.
He's still on probation for assaulting then-girlfriend Rihanna in 2009 and also faces trial in Washington, DC next month for an altercation with a man outside of a hotel there.