Personalized 3rd Birthday Twincess Youth Long Sleeve T-Shirt. 3RD BIRTHDAY TWINCESS Youth Long Sleeve 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. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)