World Book Day is fast approaching this March 5th 2020, and we have a huge selection of new and popular Kids World Book Day Costumes for you to read up on. Let your child celebrate the joy of reading with favourite children's book characters such as Where's Wally, the Gruffalo and Harry Potter. We have best-selling children's World Book Day costumes such as Matilda and Alice in Wonderland, to crime fighting favourites like Batman, Spiderman and Captain America. Explore World Book Day dress up ideas from the best children's authors such as Roald Dahl, Dr Seuss and David Walliams. Using their imagination, they can be whatever they wish! If your little one hasn't started school yet but they want to get involved in the event, we have a wide range of toddler World Book Day outfits. They're cute, colourful and creative. View all of our World Book Day costumes for kids above.