Personalized Twins Happen Baby Gift Newborn Layette. Boy or girl twins Newborn Layette - White matching outfit with tiny stars and twins happen quote. 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months