New never worn pull string is free to gather all the way around so can be adjust to different size waist. This dress is 100% polyester but feels llike silk . the buttons unbutton all the way up to where i have them opened and working hidden buttons from top all the way to waist .as you can see roll up sleeve with button for neet look that will stay rolled up . approx measurments 46" waist ungathered 25" bust straight across the front 18" across the back seam ot seam 58 1/2" shoulder to hem 23" sleeve shoulder to cuff