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