Personalized Nanna is Outta This World Youth T-Shirt. Nanna Youth T-Shirt - White has cute starburst design in pastel colors with Nanna is outta this world quote for kids. 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.