Rachel Bilson: It's a Piece of Cake!

Rachel Bilson is very animated with her hand gestures while out and about in Los Feliz, Calif., on Wednesday afternoon with her spiritual adviser mom Janice.

The 27-year-old former O.C. starlet was seen going to a few book stores before trying on some jewelry at the ‘Cake’ boutique in Los Angeles.

Rachel should be making her way east to the big Apple for New York Fashion Week soon.

Green wayfarer sunglasses by Chanel.