Shop Baby's at RalphLauren.com, the Official Site of Ralph Lauren. Striped Cotton Polo Dress - This polo shirt-inspired dress is crafted from soft cotton mesh and features preppy stripes and our signature embroidered pony. Ribbed polo collar. Three-button placket. Puffed short sleeves with ribbed armbands. Ruffled hem with applied contrast stripes. Our signature embroidered pony accents the left chest. Comes with a matching bloomer.