Personalized Sun 4th Birthday Toddler Long Sleeve T-Shirt. 4th BIRTHDAY GIRL Toddler Long Sleeve Tee - White with number 4, happy smiling sun and cute flowers. For sunny little girls. 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.