It was a literal who’s who of young Hollywood as the “New Moon” after party got under way at club Box in New York City last night (November 19). Following the exclusive premiere, the film’s stars Robert Pattinson, Kristen Stewart, Peter Facinelli, Ashley Greene, and Taylor Lautner were spotted making their way to the late-night fete.  And that was just the beginning of the paparazzi’s dream-come-true soiree, as “Gossip Girl” stars Ed Westwick, Jessica Szohr, and Taylor Momsen all showed up.In addition, Emma Roberts, Joan Jett, Olivia Palermo, and Agyness Deyn all made appearances at the Meatpacking District locale.