Personalized Heart Smile Grandpa Toddler Long Sleeve T-Shirt. Toddler Long Sleeve Tee - White with an adorable smiling heart with flowers says GRANDPA MAKES MY HEART SMILE. Perfect for Valentine's Day. 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.