Former OC star Rachel Bilson and her fiance Hayden Christensen are reportedly taking a break from their relationship.

The pair announced their engagement in February of last year but now a source has told UsMagazine.com that the pair are “taking a break”.

Rachel attended the Take No Prisoners event in Los Angeles on Wednesday night and her engagement ring was noticeably absent from her ring finger.

According to the site, when asked about wedding plans the actress said: "No, no plans" and showed that she wasn't wearing her ring, addding "No nothing."

A source said that the couple are "taking about a month off" and have been on a break for about two weeks.

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