Kristin Cavallari blonde dancing dwts the hills dress kiss hug hyde hollywood
dancing dwts the hills dress hyde hollywood Elisabetta Canalis

The stars of Dancing With The Stars celebrated their season premiere at Hyde Monday night, where Elisabetta Canalis and Kristin Cavallari looked totally glam!

Elisabetta left her hair done up from the show -- she's just like a kid heading out after a school play!

David Arquette and Chynna Phillips (plus hubby Billy Baldwin) were also at the fete.

The Kardashians had a separate, family get-together at Mastro's Steakhouse, where Khloe Kardashian, Lamar Odom and Bruce and Kris Jenner were all on hand to celebrate Rob (even though he didn't get great scores from the judges.) See what Kris had to say about Rob's performance in our video below!