Find out your child's normal size and order 2 sizes down for a perfect fit, if you want a little looser order 1 size down. Like other reviewers, I notice that the creases smooth out after washing, but I just toss it in the washer and dryer so this may be user error. My little girl was 11 years old, about 75-85 pounds, slim, I ordered a size 7 and it fit perfectly.
DRESSTELLS Skirts Casual Evening Junior Girls' Clothing and Skirts & Skorts
49 Review
Amazon Essentials Girls Faux Wrap Medium Girls' Clothing and Skirts & Skorts
62 Review
My Lello Big Girls 10-Layer Short Ballet Tulle Tutu Skirt (4T-10yr): Adorable Dancewear for Girls!
43 Review
My Lello Little 10 Layer Ballet Girls' Clothing in Skirts & Skorts
42 Review