My daughter is 12 but wears a size 14-16 or one size down for juniors. I have XL in it and they fit her perfectly. She needed something light and comfortable to do calisthenics and these seem to be perfect for that. I saw a few reviews that said something about being able to see through her, but I checked on her and didn't see anything. I have all the darker colors so maybe the lighter ones have this problem. This is excellent value for money.
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