Paris Jackson's health crisis. ET exclusively reports on why the 20-year-old daughter of the late Michael Jackson is seeking treatment. Plus, hanging with the king of "Carpool Karaoke." James Corden's giving ET a sneak peek at his upcoming primetime special and brand new details about "The World's Best" scoring the coveted spot following "Super Bowl LIII." Then, ET's breaking couples news. Exclusive details on Justin Bieber and Hailey Baldwin's upcoming wedding celebration and when are Chris Pratt and Katherine Schwarzenegger tying the knot?

Plus, only ET is inside the newly remodeled ?Celebrity Big Brother? house. Wait until you hear what the famous houseguests are saying about their new home.

Then, who will be unmasked next? Nick Cannon gives ET new clues behind the identity of ?The Masked Singer.?

Entertainment Begins and Ends with ET.