Personalized Dinosaur 1st Birthday Baby Bodysuit. A dinosaur apatosaurus (or brontosaurus to the grandparents) stands tall over the 1 for the first birthday. Happy birthday to the one year old! 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.