Personalized Cutest Little Sister Long Sleeve T-Shirt. Long Sleeve T-Shirt - White says CUTEST LITTLE SISTER in bright, bold colors. Little hearts above the "i" in the words LITTLE and 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