Personalized First Birthday Party Im One Newborn Layette. Happy 1st birthday to a child turning one year old with this cute gray lettered party I'm one Newborn Layette - White 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