WATCH: Gwen Stefani and James Corden Recruit George Clooney and Julia Roberts for ‘Carpool Karaoke’

Carpool Karaoke took an excellent turn last night when we got not one guest, but three.

Gwen Stefani started off the ride with James Corden, during which they sang No Doubt’s “Don’t Speak” and some of her older solo hits like “The Sweet Escape,” and discussed her relationship with Blake Shelton.

Around 6:20, they pick up Money Monster co-stars George Clooney and Julia Roberts so they can “use the HOV 4 lanes.”

The foursome sang the expletive-filled “Hollaback Girl” and don’t hold back whatsoever, after which they discuss what a “hollaback girl” actually is.

Watch them get deep and sing Queen’s “We Are the Champions” in the video above.