Personalized Happy Clam 3rd Birthday Baby Bodysuit. 3rd birthday HAPPY AS CLAM 3 YEARS OLD I AM Baby Bodysuit - Light Blue with smiling pink clam in a purple shell blowing bubbles. 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.