I bought this a couple of years ago. I ordered a medium because I can never tell if the armholes will be too small, as they often are in less expensive clothing. But, there was no need to worry!  It had 3 buttonholes I could adjust to make it better-sized & that's what I did. It made the dress perfectly sized. And, I must add, that these dresses from Amerimark, all seem the same in sizing. They all give nice arm holes that are not too small or too large.