My child is a tall six year old and bought her the 5-7 size and it fits her well. Looks decent quality, particularly for the price and she's very happy with it.
Excellent costume fits my wee girl perfect she is 8 but small and fine so i ordered the medium One and its perfect on her the wrist band is too big but the rest is perfect my wee girl loves it and cant wait for Halloween now :D
My daughter complained of how uncomfortable and itchy the material was on the top of the outfit so wouldn't wear it at all even with a tshirt or jumper underneath. Other than that it's lovely.