Rachel Bilson stops for a little Jamba Juice pick-me-up on a cloudy Los Angeles Saturday morning in Los Feliz, Calif.

The former O.C. actress wore a gray hoodie and a matching Chanel scarf. Is shs wearing “pal” Hayden Christensen’s hoodie??

On Friday, Rachel joined the nerd herd and filmed scenes for her multi-episode arc on NBC’s spy drama Chuck starring Zachary Levi. She even took her younger sister Hattie with her on set.