Personalized It's My Birthday Dragon Toddler Long Sleeve T-Shirt. It's My Birthday! A cute dragon is amazed at the size of its birthday cake. Funny gift for any dragon lover's birthday. 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.