Small was too small, medium just a bit too large but I went with it because it actually fit. The small one couldn’t zip at all. I’m between small and medium depending on the type of top/material I’m getting. This corset is absolutely gorgeous btw! A small hook and eye pin at the top of the zipper would be extremely beneficial for this corset because the zipper wouldn’t stay zipped up! That was totally annoying. Besides that, it looked and felt amazing.