Personalized My First Christmas Toddler Long Sleeve T-Shirt. My First Christmas Reindeer. A cute baby reindeer with a Santa hat, scarf, and shiny red nose celebrates its 1st Christmas! 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.