These slippers are great and are sooo cute in baby pink. I wear a 6.5 and bought the size 4 (which I've done before in the kid's ugg short boots with no problems). They were too snug all the way around. I gave them to my mother who wears a size 5 and has wide feet. They fit her fine. I will order the size 5 in kids next time.  I'm thinking I will purchase the cactus flower color next time.