NWT Madewell White Square-Neck Mini Dress in 100% Linen A square neckline, cutout detail and a body-skimming fit add a structured feel to this short-sleeve mini. Coming in our favorite 100 percent linen, it feels dressed up but casual enough for a date. Body-skimming fit. Linen. NWT Madewell White Square-Neck Mini Dress in 100% Linen