A casual Jessica Simpson crashed the Cinema Society’s after-party for “La Dolce Vita” in a T-shirt, shorts and clogs. After approving designs for the tween clothing line she’s launching with sister Ashlee, Jessica wasn’t prepared for the Gucci-sponsored bash at the Top of the Standard attended by Vera Farmiga, Emily Mortimer, Josh Hartnett, Susan Sarandon and Darren Aronofsky. “I walked in here with sunglasses on my head, and I was, like, ‘Oh, my! I have no makeup on,’ ” she told us. Simpson cuddled with fiancé Eric Johnson. When fotogs asked Jessica to pose, a friend snapped, “No pictures! She has no makeup on.”