Personalized This Girl Believes In Christmas Toddler Long Sleeve T-Shirt. Christmas Toddler Long Sleeve Tee - White with two thumbs up and Christmas tree says THIS GIRL BELIEVES IN 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.