Personalized Castle 1st Birthday Princess T-Shirt. 1st birthday ONE YEAR OLD PRINCESS T-Shirt - White with sweet pink and green castle, big number 1 and funny frog prince. 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.