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