Personalized Lil Sis Unicorn Girls Sister Newborn Layette. Lil Sis Newborn Layette - Pink has adorable little girl unicorn and hearts for a new sister, a great gift idea for baby. 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