Personalized 2nd Birthday Twins Party Toddler Long Sleeve T-Shirt. Cute second birthday party design for twins turning two with party hats and stars on a 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.