Kristen Stewart is "dying to" make another movie with Robert Pattinson.

The Snow White and the Huntsman actress is desperate to work with her boyfriend - whom she has been dating since they began working on the Twilight Saga film series - again and is looking for a "ridiculously ambitious" project to star with him in.

Asked if she would be interested in appearing in the forthcoming big screen adaptation of E. L. James' best-selling novel Fifty Shades of Grey, she told Celebuzz, "I haven't read the book yet, so I don't know. But I'm dying to make another movie with Rob. I think we're a good team, and whatever it is needs to be so ridiculously ambitious ... but I'd love to work with him again."

Kristen recently revealed Robert was a big fan of her work in Snow White and the Huntsman: "He likes it. He really likes it. It's cool. It's good. I'm really proud of it."

The actor secretly attended the UK premiere of the movie this week to support his girlfriend. Kristen, 22, who plays Snow White, presented the film with the cast on stage while Robert watched from the audience. "Rob was Kristen's date. Rob was cheering and clapping for Kristen as they walked off stage. He looked proud of his girlfriend," a source said.