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