Christina vs. Mariah: Style From Reality's Biggest Voices

Look out Christina, you're no longer the biggest voice on the judging panel! With a five-octave vocal range (Aguilera has four), supreme songbird Mariah Carey is hitting the small screen this week as a newly-minted judge on American Idol Season 12. While Carey's catty shenanigans with fellow judge Nicki Minaj has already hit headlines, let's see if her recent style decisions can make a scratch Aguilera's reality judge wardrobe! -- By Tiffany Lee