This is a Ralph Lauren dress in excellent condition. It is made of 58% nylon, 40% polyester, and 2% elastane, and it is lined with 95% polyester, and 5% elastane. It is a size 10, and it measures 18" from armpit to armpit, 15" across the waist, 20" across the hips, and 40" from top to bottom. Feel free to contact me with questions!!!