Personalized Monster 2nd Birthday Long Sleeve T-Shirt. Cute 2nd birthday Long Sleeve T-Shirt - White with a funny cartoon purple monster, stars and polka dotted number 2 says THIS LIL' MONSTER IS TWO! 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