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.
This dress when I bought it, I bought a large but it was a large 3 times my size. I had to get it taken in and have worn it twice since. Today I picked it up to wear and the zipper to the front is spoilt.