• RACHEL & HAYDEN photo | Rachel Bilson

Credit: FameFlynet

Published: Tuesday May 28, 2013 17:00 PM EDT



Who's having The O.C. flashbacks? Rachel Bilson shows off her California girl know-how (in a Summer Roberts-worthy number, no less) while vacationing in Barbados with her own personal lifeguard, beau Hayden Christensen, on April 13.

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