I put 4 because I was disappointed with the fit. My daughter wears 5T or XS 4/5. I bought a size 4-6 based on the reviews and it fits more on the 4th end of the spectrum than a 6. Still very comfortable and she loves it.
Amazon Brand Sleeveless Unicorns Metallic Girls' Clothing in Dresses
75 Review
First Communion Dress Line Ivory Girls' Clothing and Dresses
56 Review
Rainbow Toddler Princess Sleeveless Sundress Girls' Clothing and Dresses
57 Review
π Glamulice Princess Wedding Dress: Embroidered Flower Sparkle Tulle Birthday Party Gown for Girls
60 Review