Personalized Princess 5th Birthday 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! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.