Ashley Greene stuck close to her Breaking Dawn costar Jackson Rathbone yesterday when they arrived at the airport in Vancouver. The duo are back in Canada to finish up work on the last installment of the Twilight series. They had a brief hiatus to visit friends and family in other parts of the world after also being on set north of the border early last week. Their cast mates Robert Pattinson and Kristen Stewart have apparently already finishing their work on the series, and they left town in order to attend Sunday's NYC premiere of Water For Elephants. Robert's appearance on the red carpet with costar Reese Witherspoon was a big thrill for fans, but things only got better afterward — Robert Pattinson and Kristen Stewart were spotted kissing when they hopped into their car to go home!