Personalized 1st Birthday Singing Cat Long Sleeve T-Shirt. A cute kitten sings happy birthday to the 1 year old on her first birthday. 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