‘Late Late Show’: Gwen Stefani Does Best ‘Carpool Karaoke’ Yet (WATCH)

The No Doubt singer was joined by two of Hollywood's biggest stars

Gwen Stefani Sings Carpool Karaoke

Things got a little b-a-n-a-n-a-s when Gwen Stefani, Julia Roberts and George Clooney appeared  on the May 4, 2016 episode of THE LATE LATE SHOW WITH JAMES CORDEN for the best-ever edition of “Carpool Karaoke.”

The segment began with Corden and Stefani zippin’ around Los Angeles and rock’ out to No Doubt hits like “Don’t Speak” and “The Sweet Escape.”

But even A-listers end up getting stuck in traffic. Luckily, the were able to pick up a few extra friends to qualify for life in the carpool lane.

Together the foursome cranked out some “Hollaback Girl” before ending the ride with the Queen classic, “We Are The Champions.”

Watch the full video below.

THE LATE LATE SHOW WITH JAMES CORDEN airs weeknights at 12:37 AM on CBS.