Sage green sweetheart long silky satin mermaid dress

This dress was originally purchased off of a bridesmaids dress website for my maid of honor, my sister. It is listed as a U.S. size 2, however, it fits more like a size 0. The color is a light sage green (please refer to the first photo of my sister in the dress). I posted a photo of my sister trying on the dress as well as the website photo of the dress in color Sage green - the other photos of the dress on this listing are from the website but in a different color (the website doesn’t have any other colors of the dress in Sage green). It is a very pretty dress, but it didn’t fit my sister. Besides trying it on, it has never been worn. We are unable to return it because the date of when we could return has passed. Please let me know if you have any other questions!