Personalized It's My Birthday! Newborn Layette. It's My Birthday! A birthday cake carrying a birthday present is rushing to celebrate your birthday! Cute b-day gift 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