Personalized 3rd Birthday Twincess T-Shirt. 3RD BIRTHDAY TWINCESS T-Shirt - White with purple flowers and a cute princess with purple hair wearing a gold crown. TWIINCESS has two "i's" and two candles. 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.