I just received this set and it’s super cute! I’m 5’6” 160 lbs with a small top, larger bottom, and long arms. I ordered a small even though I’m typically a medium in FN, based on reviews saying that it runs big. I can fit the small, but the pants hit right at my ankles so I have to wear flats with it. The arms come down to my wrists but I also wish they were just a tad longer. I would say this outfit runs true to size, I could have gotten a medium.