Rachel Bilson: Barbados with Hayden Christensen!

Rachel Bilson shows off her bikini bod in a black two-piece while vacationing with boyfriend Hayden Christensen on Friday (April 22) in Barbados.

The two enjoyed some R&R on the island, hitting the beach and taking a dip in the ocean together.

Earlier in the day, Rachel, 29, and Hayden, who turned 30 on Tuesday, jetted out of NYC’s JFK Airport.

Rachel was in the Big Apple to attended the Magnum premiere at the 2011 Tribeca Film Festival with designer Karl Lagerfeld.

10+ pictures inside of Rachel Bilson and Hayden Christensen in Barbados…