Stewart 'laughs off Pattinson pregnancy'

Twilight actress Kristen Stewart has reportedly laughed off speculation that she is pregnant with co-star Robert Pattinson's child.

The 19-year-old is thought to have told the cast and crew on her new movie The Runaways that the story is completely false.

Speaking to Life & Style, a film insider said: "Joan [Jett] and Kristen managed to have a laugh about the rumour. Kristen just thought it was ridiculous."

The claims had been started by an Australian magazine earlier this week after a friend of the actress was allegedly seen buying a home pregnancy kit.

Stewart and Pattinson recently finished filming vampire sequel New Moon and will reunite next month to begin working on third instalment Eclipse.