Tina Fey Quizzes Superfan Mariah Carey on 'Mean Girls' | Billboard's Quizzed

Oh, so fetch! In the season 2 premiere episode of Billboard's "Quizzed" video series, 'Mean Girls' star and screenwriter Tina Fey quizzes superfan Mariah Carey to see just how much the singer actually knows about the hit 2004 film.