Personalized It's My 8th Birthday with The Whatif Monster Newborn Layette. There's no day like your birthday, so why not try something new? It's My 8th Birthday with The Whatif Monster Newborn Layette - Light Blue, perfect for little fans of "Jonathan James and the Whatif Monster" by Michelle Nelson-Schmidt. 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