Would best fit a size M. Tag size US 8 but runs a little smaller. Fits more like a US 6. 
The outer layer is a beaded silk chiffon and the lining is polyester. Bias cut and zipper closure with a padded bust. 
There’s a small black mark on the hem of the dress in the back which isn’t visible when worn. 
34-36.5 inches around armpits 
28-30.5 inches around waist 
58.5 inches long