Personalized Big Sister T-Shirt. This collection is not just about style; it's about creating lasting memories. Encourage her excitement and sense of responsibility with clothing that celebrates her new role. Ideal for gifting or as a treat for your little one, our Big Sister Kids Apparel is a must-have for any family welcoming a new baby. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.