Rachel Bilson, Hayden Christensen engaged?

London, Feb 19 (ANI): 'The O.C.' star Rachel Bilson and beau Hayden Christensen may soon announce their engagement, as the actress was spotted with a huge rock on her wedding finger.

Rachel, who has been dating Hayden for a year after the duo met on the sets of 'Jumper', was spotted with ring while she was in flight going to New York, reports PageSix.

"A man sitting in front of her on the plane saw a ring on her finger and asked if she was married," The Daily Express quoted a source, as saying.

To which Rachel replied: "I'm not married yet, just engaged. I know I look like I'm 15 but I'm actually 27." (ANI)