Lazy One Woodland Owl Fleece Slippers kids size 4-9 NWOT

Lazy One Woodland Owl Fleece Slippers kids size 4-9 NWOT My 3 y/o received these last year and I was thrilled because they are incredible cozy looking, with grippy bottoms and a cute little owl. However, my child was terrified of the owl and never wore them, and they have been outgrown now. Size says 4-9, but my recently 4 y/o kiddo is in an 8.5 and they don't fit. I'd say these run small.