Dear jose pink puff sleeve milkmaid dress with crystal button

Dear jose pink puff sleeve flowy dress waist pannel dress with beautiful button embellishment size: medium/ US 4 (asian sizing) it fits more like a size US small / US 4 excellent condition except one flaw, i wore it once and washed it and the string on the back snapped off, i would assume if you know how to sew it might be an easy fix however as you can see in pictures if you tie the string back on it isn’t too noticeable! big box storage