Kristen Stewart, the 19-year-old star of the Twilight franchise, knows that she can come across as sullen and self-conscious in the public eye. But during an exclusive EW roundtable in Vancouver, Canada, where the cast was prepping for their last week of the Eclipse shoot and then the immediate onslaught of publicity for the November 20th release of New Moon, Stewart was funny, quick and outspoken in a wide-ranging conversation with co-stars Taylor Lautner and Robert Pattinson. Asked about ...