Personalized Monkey 1st Birthday 1 Year Old Girl Newborn Layette. Cute Monkey Newborn Layette - Black for a 1st birthday has I'm One slogan. Cute gift idea for a one year old girl. 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