Ah, Book Week. That special time of year when parents all over Australia sit down in front of the TV at 9pm on a Sunday armed with glue sticks, a bit of cardboard and absolutely no clue what the hell they're making.

Does this look like a caterpillar mask?

Can this pass for a crayon?

Is it giving fart? Like does it actually look like the fart from the book?

If the whole DIY thing isn't in the least bit appealing or you've just left it a little too late (read: all of us) then scroll on to see 20 easy Book Week costumes you can order online in the click of a button. You're welcome.

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Classic characters costumes for Book Week 2024.

Spotlight Gruffalo Kids Costume, $35

This Gruffalo costume isverycute and very affordable. It's the kind of thing we reckon they'll want to wear long after Book Week's over.

Big W The Very Hungry Caterpillar Child Costume, $35.

Save yourself the trouble of sewing or gluing and go for this adorable two-piece instead.

Big W Little Red Riding Hood Costume, $15.

The gingham print and puffy sleeves will delight fans of the iconic fairytale.

Target Bluey Premium Kids Costume, $32.

Harry Potter Classic Movie Book Week Child Boys Costume, $63.95.

When only Harry Potter will do. This robe comes with a built-in shirt which will cut down getting-ready time. BYO glasses and make-up scar — but they'll dress up in this long after Book Week.

Big W Harry Potter Childrens Gryffindor Robe, $20.

Another robe option for the little wizards, with a price that's too good to pass up.

Rubie's Mr Fox Deluxe Costume for Kids, from $25.95

We have to admit, in a different context the mask could be a touch creepy. But worn with a tiny striped coat and neckerchief, it's more Book Week than Halloween costume.

Rubie's Girl's Willy Wonka Tabard Golden Ticket Costume, $22.99.

Um, sorry, but this is genius? And adorable? An easy throw-on-and-go option for less than 25 bucks.

Spotlight The Cat in The Hat Jumpsuit, $42.

It's a classic for a reason. The hardest part of this costume is getting the whiskers right with your liquid eyeliner.

Costume Box Roald Dahl The Twits Mr Twit Boys Book Week Costume, $64.99.

As long as you can convince your child to wear a scowl all day, this costume will be a success. Just look at that beard.

Rubie's Official Girl's Disney Alice in Wonderland Mad Hatter Costume, $38.99.

Alice in Wonderlandis a rich vein for Book Week inspo. We love this Mad Hatter-inspired look which comes with a separate bow-tie and giant hat.

Official Disney Girls Mary Poppins Fancy Dress Costume, $37.99.

The little Victorian dress and hat! Julie Andrews would be proud.

Big W Winnie The Pooh Deluxe Childrens Costume, $20.

This snuggly jumpsuit comes with a bear hood and that's all we need to say, really. The cuteness sells itself.

Costume Box Underwear Hero Kids Book Week Costume, $49.99

Based on the iconic Captain Underpants, this will get the kids and their friends giggling.

Costume Box Peter Rabbit Lily Bobtail Deluxe Toddler Book Week Costume, $32.99.

Your toddler can channel Lily Bobtail in this sweet Peter Rabbit-inspired 'fit.

Miscellaneous characters.

Spotlight Spartys Kids Dinosaur Costume, $20.

Sometimes your child just wants to be a dinosaur. And that's okay! There are books about dinosaurs!

Spotlight Christy Spider Witch Girls Costume, $38.50.

The witch had a cat. And a very tall hat...If your household has had a few thousand renditions of "Room on the Broom", this might be the generic witch costume for you.

Big W Checkered Dress Costume, $15.