We’re uploading loads of them every day to this gallery so you can show-off your dress-up skills to all your mates!
Check out some of our fave photos below. If you spot yourself, let us know in the comments below!
Lucy, 6, is a turtle for an under the sea theme
Lucy, aged 9, is dressed as Matilda!
Chris sent this to us on social media; It’s Roald Dahl from his RAF days and Isadora Moon!
Heidi and Darcy are both Gangsta Grannies!
Erin’s dressed as Hermione!
Julia, 9, is Willy Wonka!
Ana, 5, is The Little Mermaid!
Maddie, 9, is Shirley from “Wave Me Goodbye”!
Phoebe-Jean’s dressed as Amy Cluckbucket!
Emily’s Pippi Longstocking!
Daisy Wart from You Can’t Make Me Go To Witch School
George is Commando from the comic books!
Sophie’s Mildred from The Worst Witch!
Callum, 8, is the Tin Man this World Book Day!
Amelia Fang from Amelia Fang and The Barbaric Ball
Jack-James is Willy Wonka!
Maya, 8, is Tracey Beaker!
Luke, 11, is celebrating World Book Day as Burt!
Matilda is Wish from the Wizards of Once!
Rylie, 8, is celebrating World Book Day as Billionaire Boy!
Ayden, aged 4, is dressed as PC Selby from Postman Pat
Megan’s Poppy/ Matilda from Shadow House
Erin, 7, is Gangsta Granny!
Nathan, 5, is an Elf this World Book Day!
Teddy and Clara are Bert and Mary Poppins!
Twins Eva and Matthew are Paddington and Mr Gum
Megan’s The Mad Hatter and Alice from Alice’s Adventure’s
Jasper’s dressed as Bear Grylls!
This one’s very apt! Jamie, 11, is Jon Snow!
Aayushi, 10, is the Queen of Hearts!
Saoirse and Niamh is Thing 2 and Red Riding Wolf!
Noah, 8, has dressed as The Boy in The Dress!
Polly is the Hungry Caterpillar!
Alex, 11, has dressed up as Wally from Where’s Wally!
Bethan, 10, is Miss Root from The Demon Dentist!
Holly, 5, is Mildred Hubble, The Worst Witch
Tippi and Ava are Orange crayon from the day the crayons quit and penguin from lost and found
Tiffany is Mildred Hubble, The Worst Witch
Georgie’s dressed as Emmeline Pankhurst!
Jessica’s gone as Dorothy this World Book Day!
Scarlett, 5, is the Little Mermaid!
Chloe and Amelia, 7 and 4, are sad as the snow has postponed World Book Day for them!
Lacie, Brandon, Morgan are Repunzel, Walking with dinosaurs, Maleficent
Megan, 11, is Adam Meltzer from Memoirs of a Neurotic Zombie!
Sophie, 10, is the Mad Hatter this World Book Day!
Kevin from Kevin by Rob Biddulph
Savannah & Dominic are Postman Pat & Ben 10 Alien.
Lewis is dressed as The Grinch!
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