I’m normally between M-L. These days I’m always taking a gamble with FN clothes since they have gotten on the cheaper side with their clothes. it’s a headache.. I purchased a M and am 5’7 172 lbs for reference. ladies please gives us your normal size and the size you purchased!!! It’s what is customers depend on. NOT if the outfit is “cute” or if you can dress up or down. I see the same basic, waste of reviews from everyone. It makes it hard to choose the right sizes. Anyway, the jumpsuit was perfect fit lol LOTS of stretch :)