Stella McCartney's Kelsey dress is a study in after-dark elegance. Barely there spaghetti straps and romantic lace inserts allude to a lingerie inspiration, while the Japanese-made velvet falls in an exceptional drape and has a light-catching luster that is a sartorial pleasure to wear. Further the piece's '90s vibe by wearing yours with platform sneakers, or take it into the night with sleek ankle boots and a bold lip.