Personalized 3rd Birthday 3 Year Old alphabet Long Sleeve T-Shirt. 3rd Birthday Long Sleeve T-Shirt - White has A B C look who's three third birthday quote and stacked alphabet blocks for a boy or girl turning 3 years old. 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