Personalized I Believe In Santa 2 Baby Bodysuit. Funny Christmas Baby Bodysuit - Royal Blue with Santa cap says I BELIEVE IN SANTA... JUST BECLAUS. Perfect holiday gift for anyone who believes in Santa Claus and Christmas. 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.