Personalized Big Sis To Be Girls Sister Announcement Long Sleeve T-Shirt. Announce you're a Big Sis To Be Long Sleeve T-Shirt - Pink with this stylish design with pink hearts and butterfly. 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