Personalized Happy 100 Days Of School Toddler Dress. Whether your child is celebrating their 100th day of school at home or in the classroom, our Happy 100 Days Of School design apparel is a must-have. It's not only a stylish addition to their wardrobe but also a special keepsake that they can cherish for years to come. Get yours today and let your child shine on their special day! Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!