Stewart: Twilight's Bella is cool

Kristen Stewart has revealed how much she has enjoyed playing Bella Swan as a vampire.

The 22-year-old actress, who reprises her role as Bella for the fourth and final film in the Twilight Saga, Breaking Dawn - Part 2, was joined by co-stars Robert Pattinson and Taylor Lautner at San Diego's Comic-Con International.

Following a sneak preview from the upcoming movie, showing Bella adjusting to her new life, Kristen admitted: "It felt so good to break her in, to see how fast the car goes. I love her. I think she's the coolest one, so I had fun doing it."

Fellow cast members Peter Facinelli, Ashley Greene, Nikki Reed, Elizabeth Reaser, Kellan Lutz and author Stephenie Meyer, who wrote the original book series, also took the stage.

Kristen added that appearing with her Twilight cast mates in front of around 6,000 fans for their final Comic-Con panel "is kind of sad, man".

Director Bill Condon - appearing via video link from London, where he is recording the score for the film - said: "Everyone knows the phenomenon of Twilight really exploded here (at Comic-Con), and we're all aware, too, this is the last time."

Many fans slept overnight for a chance to attend the panel presentation at the San Diego Convention Centre, although there was tragedy when one Twilight devotee was killed after being hit by a car.

Comic-Con's head of marketing addressed the fans to say he was shocked at the woman's death, saying: "Our heartfelt condolences, thoughts and prayers go out to her family."