World Book Day Costumes

Whether you’re searching for the perfect World Book Day costume for girls, boys, or an adult looking to join the fancy dress fun, we’ve got 100s of World Book Day costume ideas for you to choose from! You’ll find Book Day outfits for all your favourites, from Alice in Wonderland to Harry Potter, as well as iconic characters like Matilda, Willy Wonka, The Gruffalo and more from popular children’s authors like Julia Donaldson, Roald Dahl and David Walliams. We've also got World Book Day costumes for teachers so the whole class can get involved!

Whether you’re searching for the perfect World Book Day costume for girls, boys, or an adult looking to join the fancy dress fun, we’ve got 100s of World Book Day costume ideas for you to choose from! You’ll find Book Day outfits for all your favourites, from Alice in Wonderland to Harry Potter, as well as iconic characters like Matilda, Willy Wonka, The Gruffalo and more from popular children’s authors like Julia Donaldson, Roald Dahl and David Walliams. We've also got World Book Day costumes for teachers so the whole class can get involved!

Our Top Picks for Kids

Our Top Picks for Teachers

World Book Day Celebration Materials
Discover our brand new range of decorations and classroom materials.
5% of every sale will be donated to World Book Day to support their work
 to change lives through a love of books and reading. 

World Book Day
Celebration Materials

Discover our brand new range
of decorations and classroom materials.
5% of every sale will be donated to World Book Day
to support their work to change lives
through a love of books and reading. 

Get Inspired

Still need a little more inspo? Browse our customer favourites and tap to shop the costumes you love!

Frequently Asked Questions

Frequently Asked Questions

World Book Day is on Thursday 6th March 2025.

World Book Day is an event celebrated by schools and librares in the UK and Ireland. Typically held on the first Thursday of March each year, on World Book Day, children are encouraged to dress up as their favourite character, bring their favourite book into school, have fun with reading by taking part in activities and can exchange their £1/€1.50 book token for a World Book Day book for free. 

The World Book Day charity changes lives through a love of books and reading. Their mission is to promote reading for pleasure, offering every child and young person the opportunity to have a book of their own and to raise awareness of the difference reading makes to children’s lives particularly those growing up in disadvantage and inequality. World Book Day also offers activities to support families to help children love reading all year round on the World Book Day website.

World Book Day is an event celebrated by schools and libraries in the UK and Ireland. Typically held on the first Thursday of March each year, on World Book Day, children are encouraged to dress up as their favourite character, bring their favourite book into school, have fun with reading by taking part in activities and can exchange their £1/€1.50 book token for a World Book Day book for free. 

The World Book Day charity changes lives through a love of books and reading. Their mission is to promote reading for pleasure, offering every child and young person the opportunity to have a book of their own and to raise awareness of the difference reading makes to children’s lives particularly those growing up in disadvantage and inequality. World Book Day also offers activities to support families to help children love reading all year round on the World Book Day website.

Anything you want to be! Whether you want to bring some magic to the classroom and dress as Harry Potter, keep it classic as an iconic Roald Dahl character or you love comics and want to bring your favourite superhero to life there are no rules. For inspiration, we have World Book Day ideas for kids and adults so you can find the perfect World Book Day costume easily.

World Book Day is all about having fun with books and reading and what's more fun than dressing as your favourite character? Dive into a world of pure imagination with our Willy Wonka costume, become a hero and dress up as Matilda or have a supercalifragilisticexpialidocious World Book Day and dress as everyone's favourite nanny Mary Poppins.

For adults, this is the time to introduce the children in your class to your childhood favourites. Honour the unsung hero of the Harry Potter series Professor McGonagall, channel the scariest teacher of them all and transform into Miss Trunchbull or show the kids in your class you really know how to have fun with The Cat in The Hat.

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Book Day Costumes

Whether your kids love taking a trip to Wonderland down the rabbit hole, love the tales of the boy who lived or want to visit a world of pure imagination our collection of World Book Day costumes for kids and adults to help bring all your favourite characters to life.

Take a trip to Wonderland with our collection of Alice in Wonderland costumes. Add some life to Lewis Carroll's classic novel with our Alice, Mad Hatter, Tweedle Dum and Tweedle Dee and Queen of Hearts fancy dress. We even have a super easy Queen of Hearts make up  tutorial for you to truly get into character.

Transform your school into Hogwarts for the day with our magical Harry Potter fancy dress ideas. Whether you're a Gryffindor or a Slytherin we have a costume for everyone - even for he who shall not be named! Our Harry Potter costume comes with Harry's iconic glasses and Gryffindor robe and the Hermione costume is a must-have for every magical girl out there.

Our full collection of World Book Day costumes features iconic characters from Willy Wonka to Goldilocks. We also have a collection of World Book Day materials including banners, bunting and balloons.

Whether your kids love taking a trip to Wonderland down the rabbit hole, love the tales of the boy who lived or want to visit a world of pure imagination our collection of World Book Day costumes for kids and adults to help bring all your favourite characters to life.

Take a trip to Wonderland with our collection of Alice in Wonderland costumes. Add some life to Lewis Carroll's classic novel with our Alice, Mad Hatter, Tweedle Dum and Tweedle Dee and Queen of Hearts fancy dress. We even have a super easy Queen of Hearts make up  tutorial for you to truly get into character.

Transform your school into Hogwarts for the day with our magical Harry Potter fancy dress ideas. Whether you're a Gryffindor or a Slytherin we have a costume for everyone - even for he who shall not be named! Our Harry Potter costume comes with Harry's iconic glasses and Gryffindor robe and the Hermione costume is a must-have for every magical girl out there.

Our full collection of World Book Day costumes features iconic characters from Willy Wonka to Goldilocks. We also have a collection of World Book Day materials including banners, bunting and balloons.