Personalized Teddy Bear Birthday Long Sleeve T-Shirt. Personalize this darling teddy bear birthday design Long Sleeve T-Shirt - White with a name or slogan for your little girl. Pink cake, balloons and party bear is oh so sweet. 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