Personalized Big Sis Girls Llama Sister Youth T-Shirt. Cute pair of llamas with Big Sis announcement for girls on a Youth T-Shirt - White sister outfit. 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.