Personalized Promoted to Big Sister Toddler Dress. The "Promoted to Big Sister" apparel is available in various sizes to accommodate children of all ages, making it a versatile addition to any wardrobe. Celebrate the bond of siblings and the joy of family with this adorable collection, designed to make every big sister feel loved and cherished. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!