Personalized Messy Bun Halloween Little Sister T-Shirt. Celebrate the Halloween season with this delightful design that combines fun, comfort, and style, making it a must-have for every little sister. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.