Kristin Cavallari and Heidi Montag spent the whole St. Patrick's Day filming their reality show "The Hills" in Beverly Hills, California. The two arrived at an outdoor cafe separately but took off together. Heidi tweeted earlier that day, "Heading to Beverly Hills for a girls lunch!".
Later on they also met Audrina Patridge to shoot additional scenes at the upscale Villa Blanca restaurant. They left their separate ways with Audrina spotted at Nail Garden salon in Studio City.
The involvement of Audrina in "The Hills" filming is somehow a curious case. The 24-year-old previously said that she wanted to quit the show to have her own. Her rep explained why to E!, saying "She was announced to shoot season six [of 'The Hills']. She still has her show in development. She shot the pilot and is waiting to see if MTV picked it up."
"The Hills" will be back for the sixth season on April 27 on MTV.