Thank you for viewing from among the many products available. This is a NERDY zip-up hoodie and skirt set, size M. I wore it when I tried it on, and thought about wearing it again, but my stomach area was too big, and I haven't worn it since. I usually wear a size S, so I think size M would be a perfect fit for you. Also, I am listing this on other sites, so if you are interested, please purchase it as soon as possible. If you have any questions, please feel free to comment, and I will answer them ( ¨̮ )