Personalized Super Future Big Sister Long Sleeve T-Shirt. Cute Long Sleeve T-Shirt - White for big sisters to be with shield, stars and banner says SUPER FUTURE BIG SISTER. Perfect for superhero big sisters. 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