Personalized 1st Birthday First Birthday Happy Owl T-Shirt. Made for babies, infants, and toddlers turning one year old, our Happy Owl Me design is a fun and festive way to mark the occasion. The cartoon owl adds a playful touch to the celebration, making it a memorable event for your little girl. With its vibrant colors and cute design, this product is perfect for any first birthday party. 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.