Personalized Sun 6th Birthday Long Sleeve T-Shirt. 6th BIRTHDAY GIRL Long Sleeve T-Shirt - White with number 6, happy smiling sun and cute flowers. For sunny little girls. 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