Personalized UnBAAlievable 3rd Birthday Toddler T-Shirt. 3rd birthday IT'S UNBAALIEVABLE I'M 3! Toddler T-Shirt - Apple Green with funny dancing sheep wearing a polka dotted party hat and colorful balloons. 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.