Gwen Stefani Gets a Little Help From George Clooney and Julia Roberts During Her Carpool Karaoke

Now this is some Carpool Karaoke! Gwen Stefani is the latest star to join James Corden for a little karaoke session while helping him get to work, and the pair didn't hold back from belting out some of Gwen's best hits, including "Used to Love You" and "Don't Speak." In between showing off their vocals, the Voice judge opened up about her divorce from Gavin Rossdale, her new relationship with Blake Shelton, and how the dramatic past year has made her feel (and look!) even better. "What happened was my life blew up. After that I kind of started falling in love," she said. "Then I wrote a whole record about that. That's like what the facelift is, I think!" To make the whole ride even better, James picked up two surprise, A-list stars: George Clooney and Julia Roberts! Not too shabby of a carpool group, huh? Check out the fun clip above to see them all do their best "Hollaback Girl," and then relive all of James's Carpool Karaoke sessions with celebrities!