Personalized 3rd Birthday Rocks Princess 3 Year Old Baby Bodysuit. 3rd Birthday Princess Baby Bodysuit - Heather and Navy has polka dot number three with princess crown design and 3 rocks slogan. 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.