Personalized Puppy 3rd Birthday Toddler T-Shirt. I'm three cute puppy. Celebrate your toddler's third birthday with this adorable little doggy. Happy 3rd b-day 3-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.