Personalized Autism I Love My Sister Youth T-Shirt. Autism I Love My Sister Youth T-Shirt - Kelly Green with beautiful multi colored awareness butterfly to show support for a sister with Autism, ASD, PDD, PDD-NOS, Aspergers. 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.