Personalized Cute Turtle 3rd Birthday Youth T-Shirt. 3rd birthday I'm 3 Youth T-Shirt - White with cute, smiling turtle with bow tie and party hat holding balloons and big red polka dot number three on his tummy. 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.