Personalized Princess 5th Birthday Youth T-Shirt. Pink Princess 5th birthday. This pink heart with a jeweled tiara will make your little girl's fifth b-day special. Happy birthday 5-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.