I bought size M for my 7 year old girl (she is tall but very thin) and it fits perfectly thanks to the elastic at the back . The material is good and thick enough. I haven't washed it yet so I'm not sure if it will have a lot of creases and need ironing or not. Will be updated if necessary. But as for fitting my little girl, she loves it very much ;) I would recommend it to parents looking for a back to school uniform :)
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