ISO this orange Spring 2009 Marchesa Notte dress

PLEASE HELP ME FIND THIS DRESS!... ASO Blake Lively as Serena van der Woodsen on Season 3 of Gossip Girl. This dress is one shoulder, is a grecian-style long length maxi, with shimmering detail in orange and gold, and it appears to have either a slit or may be cut on a bias (I can't tell). It also includes some beautiful roping/braiding detail at the empire waist.