Personalized Christmas Owl 3rd Birthday Youth T-Shirt. Christmas owl 3rd birthday Youth T-Shirt - Black with a polka dotted number three and adorable owl in a Santa hat and striped scarf. Look Who's Three! Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.