HILL HOUSE Lou Lou Wool-Blend Duster Jacket - Midnight Tweed The size is XS but I am usually an M in tops, and this one actually fits fine. I would say it definitely runs big. It would be perfect for anyone wearing S/M (4-6) - New With Tags - Color: Blue/Black - Tweed fabric - Ties at bust - Lined - Self: 50% Wool, 14% Nylon, 35% Acrylic, 1% Metallic - Lining: 100% Rayon