I am 5'6 and wear a size 6-8. I ordered the small/medium. Big mistake. It was very snug. Medium/Large would have worked better. But it was also very short. When I bent over, you could see the moon. I didn't have time to return it because I needed it the next day. I wound up cutting it up the sides and making it a shirt which I wore with short shorts. The leg warmers were fine and the headband too. It was also very hot so if you we're doing an inside party, I might not wear it. I wore it at an outside party but in FL and it is still hot and humid here in October so I thought I would melt, so so hot.