Lauren Conrad was in model mode yesterday in L.A. The Hills star ”who just turned 22” picked the models to walk in her fashion show at a casting call yesterday at the People Revolution PR studios in L.A. Also there to help: Pal Whitney Port, who works at the powerhouse public relations firm. Conrad, who makes her L.A. Fashion Week debut Tuesday, ran into another reality star at the call: America's Most Smartest Model contestant Andre Birieanu.

Check back on for an exclusive interview with Conrad next week. The Hills premieres March 24.