So there are no tags on this, but I did purchase at an Anthropologie outlet where they sell irregular items. I feel like the only thing irregular about this was that it could be worn with either side as the front.. which I did.. one side has way more cleavage. Worn about 5 times until I was too pregnant for it to fit My guess is size 8 but I put the measurements in the photos Probably 100% polyester Smoke free pet free home