Personalized Birthday Boy Cupcake Toddler Long Sleeve T-Shirt. Toddler Long Sleeve Tee - Charcoal with cute blue cupcake topped with sprinkles and a birthday candle. Script text says BIRTHDAY BOY! 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.