Kristen Stewart's Surprise Appearance at Robert Pattinson's Birthday Party Exposed by 'Twilight' Director

Kristen Stewart crashed ex-boyfriend Robert Pattinson's recent birthday party, according to Twilight director Catherine Hardwicke. The former co-stars, who played Bella Swan and Edward Cullen in the hit movie franchise, reunited at the celebration. Stewart and Pattinson dated on-and-off between 2009 and 2013. Both actors have since moved on, with Stewart engaged to Dylan Meyer and Pattinson dating Suki Waterhouse, with whom he is expecting his first child.