Got a large. She's a bit fatter than some (not really during COVID lol). Sh couldn't put them on without loosening his tie, it didn't do much so don't expect to buy a lot and be able to tie it tight or loosen it. She moved to pick them up. Not much room for the hips, they are a bit short, I think an inch longer would be good. Good design is very cute. I'm considering going with the XL but will need them in a few days. I'll update when I do. Buy one size up if your little girl is taller than average if you want her to be pretty and roomy. My girl is 10 years old, 4ft 9", 87lbs and wears comfortable 14" pants and a size medium/large top.
Amazon Brand Sleeveless Unicorns Metallic Girls' Clothing in Dresses
75 Review
Rainbow Toddler Princess Sleeveless Sundress Girls' Clothing and Dresses
57 Review
First Communion Dress Line Ivory Girls' Clothing and Dresses
56 Review
UNACOO 2 Pack Sleeveless Cotton Dresses Girls' Clothing
62 Review