Personalized 4th Birthday Funny Dinosaur 4 Years Baby Bodysuit. Cute Fourth Birthday Baby Bodysuit - Heather and Navy has big green dinosaur with Rawr, I'm 4 bday quote that's great for a party photo. 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.