Personalized Big Sister Long Sleeve T-Shirt. A pink T-Rex dinosaur wearing a crown is the big sister! Cute gift for any big sis who knows she's the boss. 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