World Book Day: What to Wear Posted on February 22, 2016May 31, 2018 by IOM Staff Writer World Book Day takes place around the country every March. Here are some step-by-step instruction guides on how to dress up as well known book characters, courtesy of Book Aid. Prev8 of 9NextUse your ← → (arrow) keys to browse DRESS UP AS THE CAT IN THE HAT Get the full Cat in the Hat worksheet here. Prev8 of 9NextUse your ← → (arrow) keys to browse