Personalized This will be the Best Birthday Ever Newborn Layette. While all birthdays are worth celebrating, this one will be the best ever! This will be the Best Birthday Ever Newborn Layette - Heather, featuring Mouse from the children's book "Dog and Mouse" my 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