Paris Hilton vs. Nicole Richie
Paris' music career maybe have been stillborn but we'll always have 'The Stars are Blind' (if our copies of 'The Tide is High' ever go missing.) Her most famous fight was with one-time best friend and music royalty Nicole Richie, daughter of Lionel. Once besties, it seems that jealousy got in the way as their careers' waxed and waned. They've both gone on to big things but this is one cold war that may never thaw.
Photo by Getty Images May 2, 2012