WATCH: Gwen Stefani Lets George Clooney and Julia Roberts Hitch a Ride for Her Carpool Karaoke with James Corden

Talk about A-list passengers!

As if Gwen Stefani wasn't enough - the No Doubt singer brought along some famous faces to her carpool karaoke with James Corden - shown on The Late Late Show Wednesday night.

Joining Stefani and Corden for the ride was none other than George Clooney and Julia Roberts.

First off Stefani and Corden belted out No Doubt's "Don't Speak," as well as her solo hits "Used to Love You," "The Great Escape," and "Rich Girl."



Once they had picked up their movie star guests, the group sang "Hollaback Girl," and discussed their interpretations of the song before launching into a rousing version of Queen's "We Are The Champions."