Lunch patrons at Cardero's restaurant received a star-studded surprise when Zac Efron, Vanessa Hudgens, and Carla Gugino walked in. The three actors were with the cast of Hudgen's and Gugino's new movie. Hudgens and Efron snuggled throughout the lunch, at one point signing an autograph for a young fan. Upon leaving, Gugino, Hudgens and Efron all signed the eatery's famed chalkboard wall, which already includes signatures from the likes of Bono, Liam Neeson, Goldie Hawn, and Kurt Russell. Gugino and Hudgens were in town filming Sucker Punch, an Alice in Wonderland-esque flick.