Personalized Race Car 4th Birthday Baby Bodysuit. Cute Race Car with the number 4 on it for your little boy's 4th Birthday is fun and colorful and comes on a party Baby Bodysuit - White gift. art c. Ne' Metzger Our 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.