Derek Lam 10 Crosby 2 in 1 Dress + Sweatshirt Size 14 NWT. Retail $425 Versatile 2 piece dress set. Green striped tank dress with side zip. Grey cropped sweatshirt. 2-in-1 design Crew-neck T-shirt Short sleeves V-neck dress Cami straps Wrap skirt Regular fit True to size Lightweight cotton Soft, strong, and breathable Main: 100% Cotton.