14 easy World Book Day costume ideas

World Book Day 2026 is on 5 March. We've put together some easy costume ideas to help you turn your child into their favourite book character for the day.

Cover art from The Last Wolf

World Book Day is all about celebrating the joy of books, sharing a story together, and for millions of children, it’s the chance to spend the day dressed as a character from their favourite book.

We’ve put together some easy costume ideas with simple instructions and absolutely no sewing required. Read on to find out how to make costumes for the mouse from Julia Donaldson and Axel Scheffler’s The Gruffalo to characters from the new Moonhaven Chronicles series by Rob Biddulph, and Mango and Brash from InvestiGators by John Patrick Green.

Dress up as the characters from The Moonhaven Chronicles by Rob Biddulph

Jax, Jovi, Esau and Fourth live for full-moon adventures – sneaking out after curfew, dodging the Nighthawks and roaming the empty streets of Moonhaven. But when a rare werewolf attack rocks the town, the friends become prime suspects. With the Nighthawks closing in on anyone who was out after dark, they’re forced to run – setting off a chain of rumours, secrets and betrayals. As suspicion spreads, friendships are tested and the truth may be more dangerous than any of them imagined . . This book is packed with more than one hundred spectacular black-and-white illustrations by superstar author/illustrator Rob Biddulph.

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Celebrate with Postman Bear from the Acorn Wood stories

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Dress up as Mango or Brash from The InvestiGators

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Dress up as Tunde from The Boy With Wings by Lenny Henry

Tunde.jpg
Make your own wings
Download the instructions

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Dress up as Peanut Jones, Rockwell Riley or Little-Bit Jones from the Peanut Jones books by Rob Biddulph

Peanut-characters-WBD-1.jpg
Choose from three Peanut Jones characters
Download the instructions

Some legends are born, some are drawn . . . This second title in the funny, exciting adventure series for boys and girls of 8 to 12 fizzes with magic, danger, friendship and art. Famous works of art are disappearing from all over the world, and Peanut Jones and her friends suspect it might have something to do with the magical world of Chroma and the wicked Mr White's plot to wipe out colour, art and creativity. It's time to head back to the Illustrated City and help the resistance fight back.

Dress up as Mouse from The Gruffalo by Julia Donaldson and Axel Scheffler

Dress up as Witch from Room on the Broom by Julia Donaldson and Axel Scheffler

1. Wear all black clothes.
2. Make some wings using black and red card.
3. For extra effect, you could use face paints to finish this costume off.

Peter is just wearing his normal clothes, but to make it special you could take in a toy dog or with a piece of wire and a dog lead, make a pretend dog. Don’t forget an armful of your favourite books!

This is simple if you have the right dress – a simple white or blue outfit teamed with a headband would work perfectly.

Especially great if you love your greens! Wear a pair of jeans and white t-shirt and then simply use face paint to colour yourself green. You could complete the costume by carrying some broccoli!

Find yourself a Moone Boy hat and then you can choose your favourite weekend outfit to wear. There are lots of activities available which might add some magic to your costume on the Moone Boy website.

Simply wear your black clothes and add a purple feather to your hair. A toy mouse you can hold in your hand would complete this costume.

There are so many floors in Andy and Terry’s Treehouse that you can make loads of exciting costumes! Wear your favourite outfit, and then bring along something from your favourite level of their Treehouse.

Props could include:

  • Something from the secret underground laboratory.
  • A man-eating shark.
  • Marshmallows from the marshmallow machine.
  • A baby dinosaur from the baby dinosaur petting zoo.