Personalized Baby It's Cold Outside Toddler Long Sleeve T-Shirt. Baby it's cold outside! This cute holiday snowman is perfect for the season. Merry Christmas and Happy holidays! 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.