Kristin Cavallari & Brody Jenner's Happy Ending

2/26/2010 4:30 AM PST

Kristin Cavallari & Brody Jenner's Happy Ending

Brody Jenner is back in the driver's seat with Kristin Cavallari.



The former couple showed up together to Happy Ending lounge in Hollywood on Thursday.

Shhh! Don't tell Avril Lavigne or Jayde Nicole or ...