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 product is awesome in terms of stitch and fit. Material is average but worth the price. Finishing of the blouse is awesome. I ordered one size bigger from size chart after reading few reviews and it fits well to me. I'll write more better review after wearing it.