Personalized Big Sister Announcement owl Toddler Long Sleeve T-Shirt. Owl with hearts has big sister message for a little girl with a new sibling joining the family 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.