Personalized 1st Birthday Unicorn Cute Girls Newborn Layette. 1st birthday Newborn Layette - Light Blue unicorn party shirt says this girl is one. 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