Personalized You are the best Unicorn I have ever seen Youth T-Shirt. When no one else sees Bob as a Unicorn, his friend the Fairy knows just what to do. You are the best Unicorn I have ever seen Youth T-Shirt - White, from "Bob is a Unicorn" by Michelle Nelson-Schmidt. 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.