Personalized Princess Pink 3rd Birthday Youth T-Shirt. Pink Princess 3rd birthday. This pink heart with a jeweled tiara will make your little girl's third b-day special. Happy birthday 3-year-old! Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.