Stefani shoots down Factory Girl reports

Gwen Stefani has rubbished reports she's set to join Sienna Miller in the upcoming movie Factory Girl.

It was reported last week that the Rich Girl singer, who portrayed Jean Harlow in The Aviator, had signed on to join Jude Law's fiancee in the film.

It was said Stefani would play Richie Berlin, the roommate of Andy Warhol's muse Edie Sedgwick played by Miller.

But the blonde beauty insists: "That's a big rumour. I'm not doing it."

Stefani's husband Gavin Rossdale is reportedly set to star in the movie.