Ever wondered what happened to Laguna Beach's Kristin Cavallari? The peeps behind The Hills hope so 'cause they're bringing the former Lauren Conrad-nemesis to the same New Year's Eve party as LC and Brody Jenner, Page Six reports. And while Kristin's dating Nick Zano, we all know she also dated Brody back in the day. Who doesn't like to ring in the new year with a catfight?!