Personalized Castle 3rd Birthday Princess Youth Long Sleeve T-Shirt. 3rd birthday THREE YEAR OLD PRINCESS Youth Long Sleeve T-Shirt - White with sweet pink and green castle, big number 3 and funny frog prince. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)