Gwen Stefani and Pharrell Belt out "Hollaback Girl" at Coachella - Watch Here!
The 41-year-old rapper brought out the "Sweet Escape" singer for a fantastic performance of "Hollaback Girl," making the crowds go wild in their combined effort.
Tweeting about the concert early this morning, 44-year-old Gwen wrote, "Feels good to be out of the cave #Cochella2014 @Pharrell gx."
Responding in kind, Pharrell, who introduced Gwen as the most "awesome, rad girl in the world," tweeted, "Thank you @coachella for such a wonderful experience. #GIRL."