Marcella NYC Kathleen Velvet One Shoulder Dress. Size Medium. Black. NWT, perfect condition. Just forgot to return it! When elegantly understated is what you need, reach for our velvet Kathleen Dress. A side slit shows a hint of leg, while soft gatherings at the hips and waist flatter your figure. Her one-shoulder cut offers timeless sophistication and her midi length provides versatility—Kathleen's perfect for a black-tie event, a friend's cocktail party or a casual night out dancing in the city.