Let your little man be a little different this Book Day by choosing his Book Day fancy dress costume from Smiffys. With a huge variety of boys outfits based on characters from books new and old, our largest ever collection of Boys Book Day fancy dress costumes will leave your son spoilt for choice on which costume to choose. On top of our usual unrivalled array of fancy dress, we also have a fantastic range of licensed costumes from some of Children's Literature's best loved authors such as Julia Donaldson or David Walliams. We've got a ton of boys Book Day Costumes to choose from. Whatever happens this book day, you can be sure your child will stand out in the schoolyard.