DioGuardi -- The Spice for Season 8

The new "American Idol" judge Kara DioGuardi isn't afraid to voice her opinion and she's shown that this season of the competition is going to be quite different than the past.

DioGuardi is a songwriter who has written hits for artists like Christina Aguilera, Gwen Stefani, Ashlee Simpson and "American Idol" champs David Cook, Kelly Clarkson and Carrie Underwood. DioGuardi also co-owns the publishing company Arthouse Entertainment -- which made hits like David Archuleta's "Crush" and OneRepublic's "Apologize."

DioGuardi wasn't afraid to go into a singing battle with an auditioner wearing a skimpy bikini. When Simon immediately told her she was "going to Hollywood" after her pitchy version of Mariah Carey's "Vision of Love," the new judge questioned his choice and told the bronzed "Bikini Girl," "There's no swing" and she gave her an example of what the song should have sounded like. The contestant said Kara's rendition was worse, and DioGuardi shot back, "Hold on a minute, b***h!"