Rebecca Vallance 'Mimi' Pink Cutout Striped Cotton-Blend Poplin Mini Dress Size Medium, 8 US / UK 12: this dress features a striped poplin cotton-blend fabric, ruffled trims, gathered cutout details, elasticated shoulders, an elasticated waist, elasticated cuffs, and a partially lined design, it also has ties at the back and a non-stretchy, mid-weight fabric.