The 31-year-old actress and the 31-year-old actor were spotted riding a boat pulled raft with some friends.
The day after, Rachel and Hayden were seen doing some shopping together while on their vacation.
In case you missed it, check out Rachel looking beautiful on the cover of Cosmopolitan‘s May 2013 issue.
FYI: Rachel is wearing a M Missoni bikini.
10+ pictures inside of bikini-clad Rachel Bilson and shirtless Hayden Christensen on vacation in Barbados… More Here! »