"I'm normally a 5-5.5 and purchased the size 5 as recommended. The foot was still slightly too big but my main problem was the calf area. They are extremely narrow, and barely fit with leggings or pantyhose on. I'm petite and also own the Kamik Olivia rain boots which many people have said ran narrow, but I realized how much of a difference half an inch makes! (These are listed as 14" calf circumference vs. the Kamik at 14.5".) I also walked around my room with these on for a couple of min and the ankle area has already started creasing. I am really sad because otherwise, these boots look really nice and well made (super smooth on the outside), and are extremely comfortable with super soft lining on the inside. I was willing to overlook the creasing just because I've been looking for attractive, comfortable/less clunky rain boots like these and love that they really could pass as riding boots. Darn calves! Alas these will need to be returned."