Personalized This Princess is One Toddler T-Shirt. This princess is one! A cute unicorn prances in front of a castle in the clouds surrounded by a rainbow. Great birthday gift for the one year old. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.