I ordered the set in large and medium and I will keep medium. I probably would even fit small but I was concerned skirt will be too short. I am 138 pounds and 4”11 and size large is too big for me. The top might be still ok but the skirt is very wide. My usual size for bottoms is large or medium. I recommend order your regular size for relaxed fit or size down for tight fit, do not size up. Besides the size issue I do recommend I love it. You can wear separate as well.