Personalized Whale 3rd Birthday Youth Long Sleeve T-Shirt. 3rd birthday BEING 3 IS A WHALE OF A GOOD TIME! Youth Long Sleeve T-Shirt - White with cute cartoon whale and colorful fish. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)