Personalized Race Car 6th Birthday Baby Bodysuit. Race car 6th birthday Baby Bodysuit - Heather and Navy with red race car, checkered flags and big number 6. Side of car says BIRTHDAY CHAMP. 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.