This dress is marked as a size 2, which is similar to a size S. Shoulder to shoulder it measures 14 inches flat across. It is a babydoll dress with a side dress, so there is some extra space in the dress to accommodate multiple sizes. The material however is a non stretch/very slight stretch. The dress is not in perfect condition, it is missing one button at the top. The other two buttons are intact with no issues. There is a small amount of yellowing on the front part near the buttons. It is not very noticeable but please see the pictures. Also! There is a small dark mark on the back collar part. It also is not very noticeable but want to disclose. Please let me know if you have any questions