Personalized 100 Days of Genius 100 Days Of School Infant Dress. Whether you're attending a school celebration or organizing a themed event, our outfit will surely make you look stylish and in tune with the festive spirit of the 100th day of school. Additionally, it can serve as a matching outfit for daughters, offering a delightful way to celebrate together. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!