Personalized Dream Future Big Sister Youth Long Sleeve T-Shirt. Future big sister Youth Long Sleeve T-Shirt - Royal Blue with an adorable little girl in a pink dress and straw hat with a pink ribbon. She says MY DREAM CAME TRUE! I'M GOING TO BE A BIG SISTER! youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)