treasures surplice topsnap front elastic waist rayon rayon sometimes has a tendency to shrivel up when wet, but if you steam it or use the steam setting on an iron, it will go back to normal size! hand wash cold, but gentle is also okay Kate is 55 and wearing a medium measurements on hanger: x small: bust 32 length 17 1 2 small: bust 36 length 18 medium: bust 40 length 18 1 2 large: bust 44 length 19