Personalized 2nd Birthday 2 Year Old Girls Rainbow Star Youth Long Sleeve T-Shirt. Cute rainbow starburst with pink number 2 on a Youth Long Sleeve T-Shirt - Royal Blue for celebrating a little girl's 2nd birthday party. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)