Actress Mischa Barton has laughed off reports she's looking for love with actor Josh Hartnett, after the pair was recently seen leaving a London nightclub together.

The former "The O.C." star hooked up with Hartnett and a male friend of his at the trendy Bungalow 8 club in the British capital during a party held in celebration of London Fashion Week.

Barton was seen chatting to Hartnett at the nightspot, before she and a group of pals accompanied him to his hotel in nearby Soho, according to Britain's Daily Mail newspaper, fuelling reports of a romance.

But Barton has dismissed the rumours, telling People magazine: "It's so stupid. I'm happy being single, and that's what I am."