It's not all gowns and sparkling jewels on the Oscars preparty circuit — and last night's Kari Feinstein Style Lounge red carpet holds the proof. Best-actress nominee Jessica Chastain stepped out in a berry-hued butterfly-print blouse, tapered black trousers, and patent black Mary Jane pumps. She kept her hair down and wavy and her makeup minimal, providing a finished look that was both sophisticated and low-key. Alessandra Ambrosio also skipped the cocktail-dress fare, opting for a relaxed black t-shirt, white-and-black tuxedo-inspired jeans, a black biker jacket, and edgier buckled ankle boots. We're calling this fashion faceoff a battle of laid-back styling wit, and it's a close one. That's why we're leaving the final decision to you.