Personalized Teddy Bear 3rd Birthday Toddler Long Sleeve T-Shirt. IT'S MY 3RD BIRTHDAY teddy bear wearing a striped party hat with polka dot background, birthday gifts and balloon with the number three Toddler Long Sleeve Tee - White. 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.