Robert Pattinson, Kristen Stewart and Taylor Lautner have reportedly signed a contract to do the fourth installment of the 'Twilight Saga' series. According to sources, Robert Pattinson, Taylor Lautner and Rob's rumored girlfriend Kristen Stewart have completed their contract negotiations for 'Breaking Dawn', that might cover one or two movies.

Robert Pattinson plays the role of the 'sweet' vampire Edward Cullen who fell in love with a mortal named Bella, played by Kristen Stewart. Taylor Lautner plays the role of Jacob, a werewolf. Speaking of 'Breaking Dawn', Los Angeles Times is reporting that Robert Pattinson, Kristen Stewart, Taylor Lautner and the rest of the 'Twilight' cast members will start to shoot 'Breaking Dawn' in Vancouver, Canada this Fall. Wyck Godfrey, producer of the 'Twilight Saga' confirmed the report. Photos: Fame Pictures