Personalized Believe in Yourself Toddler Long Sleeve T-Shirt. If you believe in yourself, you can achieve whatever you set your mind to. Believe in Yourself Toddler Long Sleeve Tee - White, featuring the brave and confident "Cordelia" from the children's book by Michelle Nelson-Schmidt. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.