Personalized Happy Halloween Cat Toddler Long Sleeve T-Shirt. Happy Halloween! A cute black cat with a smiling witch hat, bubbling purple cauldron and bat friend wish everyone a happy Halloween! 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.