Personalized Lil Sis Unicorn Sister Announcement Toddler Long Sleeve T-Shirt. Unicorn riding a scooter with Lil Sis quote on a Toddler Long Sleeve Tee - Pink announcement gift for girls. 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.