Audrina Patridge and her "Hills" co-stars go clubbing in Hollywood

Audrina Patridge valets her white Mercedes G-Wagen before heading into Madame Royale, a Moulin Rouge-themed lounge in Hollywood.Although Steph told Us Weekly that her bulimia was brought on by skinny girls on "The Hills" like Patridge, the women seem pretty chummy. Audrina supposedly advised Pratt to wear a shirt over her bikini while filming in Hawaii.