Star Wars couple Natalie Portman and Hayden Christensen have been voted as having the least plausible on-screen chemistry by film fans.

The pair beat Ben Affleck and Jennifer Lopez's performance in Gigli - which was made when they were a real life couple - into second place.

Former duo Tom Cruise and Nicole Kidman also made the list with Eyes Wide Shut.

British pairing Keira Knightley and Orlando Bloom were thought "too stiff upper lip" in Pirates of the Caribbean.

The 3,000 movie-goers who were surveyed for Pearl and Dean said their screen relationship was punctuated with too much old-fashioned romance and "not enough lust".

Source: Press Release