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