Personalized Castle 3rd Birthday Princess Toddler Long Sleeve T-Shirt. 3rd birthday THREE YEAR OLD PRINCESS Toddler Long Sleeve Tee - White with sweet pink and green castle, big number 3 and funny frog prince. 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.