Gwen Stefani Raves About Ellen On 'Idol:' She's Gonna Bring Her Whole...

Gwen Stefani Raves About Ellen On 'Idol:' She's Gonna Bring Her Whole Everything'

Former “American Idol” mentor Gwen Stefani raves about Ellen DeGeneres joining “American Idol” as the fourth judge. Plus, why wouldn’t Gwen ever want to be a guest judge on the show? And will No Doubt ever play on “Idol” again?