The designers fall for an age-old prank when they're invitedout for cocktails by Christian Siriano only to discover thatit's actually challenge-time, not party-time. It's time forthe unconventional challenge where the designers will be askedto create an elegant cocktail dress from an actual cocktailbar. Plus, one of fashion's most exciting designers,Christopher John Rogers, is the judge on the guest list forthis VIP party.