Gwen Stefani Sings "Hollaback Girl" With Pharrell Williams on The Voice: Watch …

Gwen Stefani's gonna make good money off Christina Aguilera getting knocked up — TMZ has learned Gwen has signed on to be a judge on "The Voice."Multiple…

Christina Aguilera both welcomed and confirmed Gwen Stefani's role on season 7 of The Voice, when she tweeted her congratulations on Twitter.

Or perhaps he was inspired by performances not only by current coach Blake Shelton, who sang "My Eyes" with his Season 2 "Voice" team member Gwen Sebastian, but also by next season's new coaches: Pharrell Williams and Gwen Stefani, who performed 

Hakkasan Las Vegas Anniversary After weeks of rumors and talks, The Voice finally has officially named Gwen Stefani as its new coach for Season 7. Stepping in for a pregnant Christina Aguilera, the multiplatinum No Doubt 

You'll see what Gwen and I do. We're gonna take a slightly different approach. All we're gonna do is hold up the mirror and show people how rad they are already." The two musicians collaborated a decade ago for Stefani's solo hit "Hollaback Girl