Personalized Monkey Lil Sister T-Shirt. Give your little one the gift of fun and style with Monkey Lil Sister apparel, where every outfit tells a story of joy and exploration. 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.