Rachel Bilson Born Aug 25, 1981 in Los Angeles, CA Age 37 Rachel Bilson first hit it big when she portrayed Summer Roberts in The O.C.. SHARE THIS PAGE: Sign Up For Alerts: By signing up, I agree to the Terms and to receive emails from POPSUGAR. Never Miss a Story! SWEET! You’re all signed up. 892 images View All » 47 videos View All »