Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
The sleeves on this dress are very nice. I would not size up on this dress. I bought mine just way too large. The fabric is pretty thin and very light weight. There is also a lot of static cling In the dress.