The duo appeared in the Twilight movies together and are currently dating.
Stewart has now been asked in an interview with Celebuzz whether she thinks she and Pattinson could appear in the big screen adaptation of Fifty Shades of Grey, which is based on Twilight fan fiction.
She admitted that she hasn't read the novel yet, but explained that she is hoping to find a new project with Pattinson.
"I'm dying to make another movie with Rob," she said. "I think that we're a good team. I think whatever it is needs to be ridiculously ambitious, so maybe. I just haven't read it - I don't know what it is. But I'd love to work with him again."
Stewart's new movie Snow White and the Huntsman opens in theatres on June 1.
> Fifty Shades of Grey: Digital Spy casts the Twilight fan fiction movie
Watch Kristen Stewart speaking about Robert Pattinson below: