First, the size tag is missing, It does fit an 8/10 comfortably, but see measurements below. I am estimating it is a medium by the way it fits me. The cut is a classic 80s silhouette and hits just above the natural waist. 

Also, the fabric tag is missing. I am guessing that this is a silk blend. It has some weight to it and the interior is lined. No stretch. Dry clean only. 

Measures:

21.5" pit to pit

22" shoulder to hem