My 6 year old daughter wears a size 7/8 in children's clothing for girls (infant carrier, Carter's and many others). And my 5 year old wears a size 5 or size 6 (sometimes listed as 5/6 on some brands). I ordered small and medium in black. Well, Wednesday was significantly bigger than expected. If I had to guess I'd say it was an XS for a grown woman, maybe an S for a grown woman. And that was after I ran it through the washer and dryer. usually wears 7/8) Try on SMALL and it will fit her perfectly. For reference, she is a bit big. I still have 4 stars because it's a pretty decent product and I got it for a great price here at Revain. In my opinion, the reference size is: SMALL = girls' size 7/8 or Youth MedMEDIUM = women's PETITE XS
Amazon Essentials Little Short Sleeve Leotard Girls' Clothing for Active
61 Review
Hollhoff Gymnastics Playgrounds Shorts - Breathable Clothing for Girls
48 Review
Eocom Pairs Childrens Winter Animal Girls' Clothing
64 Review
Thermajane Girl's Cozy and Comfy Thermal Underwear Long Johns Set with Fleece Lining
46 Review
👑 Glamulice Princess Wedding Dress: Embroidered Flower Sparkle Tulle Birthday Party Gown for Girls
60 Review
Amazon Brand Sleeveless Unicorns Metallic Girls' Clothing in Dresses
75 Review
Fancy Girls Communion Dresses White Girls' Clothing in Dresses
53 Review
First Communion Dress Line Ivory Girls' Clothing and Dresses
56 Review