Miss Look Size 2X Lightweight Blouse EUC

This is a pretty blouse size 2X from Misslook. However, the inside tag states it is cotton, but it feels like polyester. I believe the tag is incorrect. The main colors are gray and pink. It has three buttons in the front, and above the buttons the neck is open. Shoulder to hem is 27 inches. Underarm to underarm is 22 inches. The fabric is not stretchy.