Banana Republic Black Silk Maxi Dress Women's Size 10

Banana Republic Black Silk Maxi Dress Women's Size 10 ~sleeveless ~rounded neckline ~left side zipper ~one back button ~fully lined PLEASE VERIFY MEASUREMENTS FOR FIT Approximate measurements are flat lay measurements: ~armpit to armpit 18.5" ~length 53.5" Shell: 100% Silk Lining: 100% Acetate Dry clean only *there is an area by the neckline that is discolored (see photo) - I'm not sure what this area is - could possible be removed by dry cleaners?