Size M but because it’s form fitting it would also fit a S Wear the pieces separately or together Wear the buttons open or closed 55% cotton 45% rayon Measurements taken flat without stretching Shoulder to shoulder 16 inches Shoulder to hem 21 1/2 inches Armpit to armpit 18 3/4 inches The color is a rich warm brown I purchased this from Bloomingdale’s in the 90s Excellent condition Beautiful detail in both pieces Tags: Magaschoni, sweater set, vintage, wear with anything, dressy, casual, excellent quality, cotton, rayon, party, cruise, work, play, luncheon, dinner, anytime, anywhere, rich brown