The Weinstein Co. and Lifetime threw a Manhattan cocktail party Wednesday for the upcoming series “Project Accessory,” the latest spinoff in the “Project Runway” franchise. TWC president of television Meryl Poster handpicked a group of taste-makers that included Rachel Roy, Kenneth Cole, Molly Sims, Jennifer Creel, Adam Lippes, Steven Alan and Lifetime’s Rob Sharenow to give the cast feedback on their designs. The party will be part of an upcoming episode of the show.