Silk Shift Dress with Collar Details

this dress has a 1/2 sleeve and a loose fit. the top has a fabric gathering detail. this dress is 100% silk, and the lining is polyester. the pattern is abstract. I got this from my mother. the size tag was removed. I assume it's a medium I'm more of a large and it's very tight. I believe this is a shift dress. shoulder to shoulder: 16in pit to pit: 19in waist: 19in sleeve length: 19.5in wrist diameter: 12in length shoulder to hem: 39in length pit to hem: 28ibln