Twilight actress Kristen Stewart has joined the cast of Equals, a futuristic romance based on George Orwell's classic novel 1984.

The 23-year-old is set to star alongside former Skins star Nicholas Hoult in the movie which will be directed by Drake Doremus and penned by Moon screenwriter Nathan Parker.

Speaking about her casting Kristen said: "I can't believe I agreed to do it. "I'm terrified of it. Though it's a movie with a really basic concept, it's overtly ambitious.

"In Equals, things go wrong because you can't deny the humanity in everyone. It's the most devastating story. I trust Drake's process and I know we will do something really natural and real

"But I told Drake, 'Don't expect that I am going to be able to do this. It's too hard.' But he wouldn't take 'no' for an answer. I've given directors disclaimers before, but never this much."