“When you…invite people to celebrate Prabal Gurung, the world comes, and for very good reason; he’s an amazing talent,” explained John Demsey, who along with Lisa Love, cohosted Monday night’s MAC Cosmetics and Vogue dinner in honor of the designer. “I really just love everything about him,” gushed Hailee Steinfeld, one among the “world” of fans who filed into the Chateau Marmont lobby alongside Dita Von Teese, Liberty Ross, and China Chow. Over cocktails, Ethan Peck chatted with Cody Horn, and Diane Kruger arrived in a midriff-baring Prabal Gurung ensemble, holding hands with beau [...]