Personalized Elephant Future Big Sister Toddler Long Sleeve T-Shirt. BIG SISTER TO BE Toddler Long Sleeve Tee - White with an adorable cartoon girl elephant with a hair bow and polka dot heart dress pulling a baby elephant riding in a peanut wagon. 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.