Personalized Christmas Owl Little Sis Youth T-Shirt. Cute little sister Youth T-Shirt - Heather with adorable owl in Santa hat and scarf says Lil Sis in snow covered text. For owl lovers. 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.