Personalized Happy 100 Days Of School Toddler Dress. Show off your school spirit with our Happy 100 Days Of School apparel. Whether you're wearing it in the classroom or out and about, this design is a fun and cheerful way to celebrate this educational milestone. Grab yours today and make every day at school a little bit brighter! Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!