Personalized Dream Future Big Sister Long Sleeve T-Shirt. Future big sister Long Sleeve T-Shirt - White 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! Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL