Personalized 3rd Birthday Express Baby Bodysuit. Colorful choo choo train. Car number 3 is filled with balloons and gifts. Smoke stack says ALL ABOARD THE BIRTHDAY EXPRESS Baby Bodysuit - Light Blue for a 3rd birthday. 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.