Personalized This will be the Best Birthday Ever Baby Bodysuit. While all birthdays are worth celebrating, this one will be the best ever! This will be the Best Birthday Ever Baby Bodysuit - Black, featuring Mouse from the children's book "Dog and Mouse" my Michelle Nelson-Schmidt. Our unisex one piece baby bodysuit make great gift for newborns, babies, infants, baby showers and expectant moms. An ideal gift for any new parent who will want one in every color.