Hollywood couple Hayden Christensen and Rachel Bilson have reteamed on the big screen again - a year after falling in love while making Jumper.

The pair has been coy about the romance, but Christensen and Bilson have confirmed they're dating.

And now they're playing co-stars again in all-star movie New York, I Love You, in which brunette Bilson is almost unrecognisable as a blonde.

The film, a series of short movies about the Big Apple, also features Shia LaBeouf, Natalie Portman, Kevin Bacon, Ethan Hawke, Robin Wright Penn and Julie Christie, among others.

Portman and Scarlett Johansson make their directorial debuts in the film.