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