This set is perfect for a holiday get together. It can be worn dressy with a skirt or dressed down with pants for a more casual yet still festive look. Classic, simple styling from Ann Taylor. The outer long sleeve “jacket” is a size medium & has one button on top to secure it in place. The sleeveless shell is a size large. Made of Acetate-Rayon & Metallic see inside tag. Worn once so in like new condition from non-smoke home any questions-please ask