Personalized Christmas Owl 3rd Birthday Youth Long Sleeve T-Shirt. Christmas owl 3rd birthday Youth Long Sleeve T-Shirt - White with a polka dotted number three and adorable owl in a Santa hat and striped scarf. Look Who's Three! youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)