Personalized 1st Birthday Party Girls Owl Toddler Long Sleeve T-Shirt. Cute owl in birthday hat with balloons with number 1 on a Toddler Long Sleeve Tee - Charcoal 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.