Personalized Yay! 61 Fun White Toddler T-Shirt. Yay! 61 and ready for fun in white text in a decorative white swirl is a fun design for friends and family at birthday time. 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.