Lauren Conrad of the hit TV show "The Hills," celebrating her 23rd birthday Saturday at Lavo and Tao with rumored boyfriend, actor Kyle Howard, and her best friend, Lauren "Lo" Bosworth. Conrad's friends surprised her by buying Venetian masks, which they all donned throughout dinner at Lavo. The "group" must have been quite small. Audrina and Brody "Bromance" Jenner were both missing from the guest list. They dined at Lavo on a specially prepared meal (no carb, no fat, no taste) by Chef Ludo Lefebvre. After dinner, they headed to club Tao and danced in a private skybox.