Pharrell And Gwen Stefani Sing "Hollaback Girl" On "The Voice" (VIDEO)

New "Voice" coaches Pharrell and Gwen Stefani appeared on the popular NBC show on Monday.  





While they won't officially take their seats until season 7, the celebrities shared the stage for a performance of Stefani's track "Hollaback Girl".

It has to be noted that Pharrell, 41, and Stefani, 44, sang the same song recently at Coachella.


Check out the video below…



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