Such a cool/versatile piece! Size medium, and fits loose, could fit a size S-L depending on how you want the fit! From the OperaSport website: The Nona Dress is crafted from 100% recycled polyester in blue. The dress is designed in sheer blue floral lace with a relaxed fit, and a below-the-knee length asymmetrical hem. The dress has a small button closure at the back. It is a lightweight and versatile piece, it can be styled alone or layered over trousers and skirts for a bold, modern look.