To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
I bought a toddler 8 for my daughter who wear a 8c and it was about 3 sizes too big. I reordered and every time it seemed to get bigger and bigger. I do not recommend unless you have time to go back and forth to the post office to return.