Robert Pattinson filmed a scene with his eponymous costar on the Water For Elephants set in California yesterday. He spent the day inside a big top before emerging in the evening to shoot with his favourite Tai. While his Eclipse costars have been busy promoting the movie in Europe, Rob has been hard at work on set. His attention will turn back to the Twilight saga tonight, however, when he joins the whole gang at the LA premiere. Kristen Stewart has had red carpet practice solo and with Taylor Lautner, but I can't wait to see her and Rob reunited!