Mother and Baby

The best World Book Day 2020 costumes for children, babies and grown ups

It’s World Book Day 2020 on March 5th, so don’t leave the kids' (or your) outfit to the last minute.

From a Very Hungry Caterpillar to a Fantastic Mr Fox, we’ve rounded up the best costumes for babies, toddlers, school kids and grown-ups to dress up in and let their imaginations run wild. 

In this article skip to: 

World Book Day 2020 Costumes for the whole family: 

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Mary Poppins Costume, £16.88 from Amazon

A costume that’s really supercalifragilisticexpialidocious. As well as the famous flying nanny’s buttoned-up Edwardian dress and blouse, the look is finished off perfectly with a floral hat that would definitely get Mary’s seal of approval. The only thing missing? You need to provide your own umbrella for travelling purposes. 
Harry Potter Hermione costume Expand Image Harry Potter Hermione costume

Harry Potter Hermione costume, £8, George at Asda 

This Harry Potter inspired Hermione costume is perfect for any little witch this World Book Day. The mini costume comes complete with Gryffindor tights to complete the Hogwarts look. 
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Cinderella Blue Tutu Bodysuit, £8.50 from TU Clothing at Sainsbury's 

This Disney inspired World Book Day costume is perfect for any little princess. Available in sizes 0 - 24 months it's a great costume for your baby's first ever World Book Day. As well as the bodysuit, the costume comes with an adorable headband! 
Elmer the Patchwork Elephant Expand Image Elmer the Patchwork Elephant

Elmer the Patchwork Elephant, £14.99, Party Delights

With giant 3D ears and covered in beautiful, bright patchwork colours, this very cute Elmer costume will make sure your baby stands out at play group! This all in one also comes complete with a cosy hood to keep them extra warm. 
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Baby Matilda Costume, £19.99, Smiffys

Who doesn't love the Roald Dahl book Matilda? Your baby girl will look adorable in this Matilda costume that comes complete with a blue tutu and red bow headband. Available from 6 months - 12 months. 
Toy Story Buzz Lightyear Sleepsuit Expand Image Toy Story Buzz Lightyear Sleepsuit

Toy Story Buzz Lightyear Sleepsuit, £8, TU Clothing at Sainsbury's

Your little one will be going to infinity and beyond in this super cool sleepsuit. Ideal for very little ones, the soft cotton, easy fastenings and long sleeves mean your baby can be warm and comfortable while celebrating World Book Day. 
Spot the Dog Baby Costume Expand Image Spot the Dog Baby Costume

Spot the Dog, £21.99, Smiffys

This adorable Spot the Dog costume is the ultimate cosy costume. The yellow all-in-one comes with a soft hat to keep your little one warm. The costume is available in 6-9 months and 9-12 months. 
Snow White Costume Expand Image Snow White Costume

Snow White Costume, £10, Asda

Add some Disney magic to World Book Day with this beautiful princess Snow White dress. With Satin and Velvet design plus a mesh skirt and pretty red bow headband, this costume will also be perfect for any first fancy dress parties. 
Toy Story Woody Costume Expand Image Toy Story Woody Costume

Toy Story Woody Costume, £7, George at Asda

This adorable sleepsuit is perfect for very little ones who will spend most of their World Book Day sleeping. With turn back mittens and soft cotton fabric, it's the ideal costume for babies. 
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Official Mr Fox Costume, £12.64 from Amazon

Expect ALL kinds of mischief when they put on this Fantastic Mr Fox costume. Mr Fox is always a dapper chap, so this outfit consists of a jacket, neckerchief and mask. It’s all very smart but it’s comfortable, too. Plus, the jacket comes with faux fur chest.
The BFG Costume Expand Image The BFG Costume

The BFG Costume, £14 from ASDA

As soon as you see those big ears, it’s easy to guess who this outfit is supposed to be. Change little kids into Big Friendly Giants with an impressive headband as well as a textured mock croc waistcoat, comfy elasticated trousers and a shirt to go underneath. 
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Alice in Wonderland Costume, £11.64 from Amazon

Let their imaginations really take off as they step into the magic of Wonderland with this sweet Alice outfit. Of course, this costume has her trademark black headband and apron, but there are other little details that will delight fans, like a Peter Pan collar and puff sleeves. 
Very Hungry Caterpillar Costume Expand Image Very Hungry Caterpillar Costume

Very Hungry Caterpillar Costume, £26 from

Transform your little ones into a Very Hungry Caterpillar with this adorable padded velour and satin costume. It comes complete with a red hood and antennae and has a Velcro fastening, making it easy for them to crawl in and out of. 
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Smiffys Offically Licensed David Walliams Gangsta Granny Costume, £16.98 from Amazon

If your kids are addicted to David Walliams’ hilarious books, this costume of Gangsta Granny, the international jewellery thief, might be right up their street. As well as Granny’s violet top and sparkley top, the outfit includes a grey-haired wig, pearl necklace, glasses and an eye mask. Fortunately, a can of Granny’s cabbage soup isn’t part of the look!
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Matilda Fancy Dress Costume, from £11.25 at Matalan

As you’d expect from Roald Dahl’s most famous book worm, this costume is accessorised with a bag for all theirfavourite reads. The dress itself is royal blue and features a tie at the neck and puffball sleeves to match the one Matilda wears throughout the book. 
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Smiffys Officially Licensed Peter Rabbit Costume, £21.84 from Amazon

This Peter Rabbit outfit comprises of the rabbit’s trademark blue jacket, but the good news is that it’s all an all-in-one so there’s no chance of losing anything at the bottom of the dressing up box. The hood also comes attached and is made from a soft fleece to keep your little ones cosy and looking cute.
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Black Cat In The Hat Costume, £15 from Tu Clothing at Argos

Let your kids delve right into the weird and wonderful world of Dr Seuss with this Cat In The Hat outfit. This cosy velour all-in-one really brings the character to life and comes with a striped top hat and an oversized removable bow tie. 
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Dorothy Costume, £22 from Next

Take a trip to Oz and along its Yellow Brick Road with this adorable Dorothy outfit. It includes hair ties, so you can create Dorothy’s two plaits, a lace-trim gingham dress and matching blouse. You need to provide your own ruby slippers (or nab some off an unsuspecting wicked witch!) 
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Little Mermaid Costume, £12 from Matalan 

Let your child channel their inner Disney Princess with this sparkly mermaid fancy dress costume. They'll love going to school in their fishtail dress and matching shell headband. 
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Storm Trooper Fancy Dress, £12 from Matalan 

It's arguably the most popular franchise in the world and even though Star Wars didn't start out as a book. But, there have been many books realised since the first film was released. So, it counts right? And, how cute will your little one look as a Storm Trooper - very!
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Disney Winnie the Pooh Fancy Dress Costume, £14 from George at Asda

A costume that scores well in the cuteness stakes, this Winnie the Pooh onesie has a hood with a padded face and 3D ears. There's also a version of Pooh's trademark jumper to give it an extra ‘awwh’ factor.   
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Mary Poppins Costume, £22, George at Asda

Join in on the fun with this practically perfect Mary Poppins costume. The long dress also comes with the iconic daisy hat to make sure you're the best dressed grown-up on World Book Day. 
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Harry Potter costume, £20, George at Asda

Pull on this Harry Potter cloak for a simple and effortless World Book Day costume. The costume even comes complete with the iconic Harry Potter glasses and wand to make sure you really look the part. 
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Maid Marion costume, £27.99, Smiffys

Inspired by the tale of Robin Hood, this medieval style Maid Marion costume will look great this world book day. The burgundy dress also comes complete with the Maid Marion headpiece for the perfect finishing touch. 
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Mad Hatter Costume, £29.99, Smiffys

Ideal for the dads that want to get involved, this Mad Hatter costume from Alice in Wonderland comes with the jacket, trousers and hat to make the perfect Mad Hatter look! 
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Miss Trunchbull costume, £21.10, Amazon

Go to town this World Book Day with this Miss Trunchbull costume. The iconic Roald Dahl character costume comes complete with the coat, legwarmers and eyebrow - just be careful not to scare too many children! 
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Little Red Riding Hood costume, £22.99, Party Delights

With a knee length dress and and red cape that ties at the top with ribbon, this Little Red Riding hood costume makes the ideal World Book Day costume for any grown-up. 

Looking for DIY ideas? 

Left it to the last minute and need a DIY option? There are plenty of costumes you can create using things you already have in the home!

Where's Wally?


Stripes on stripes on stripes. #WheresWally

A post shared by Where's Wally? (@officialwhereswally) on


All you need for this look is a pair of unwanted glasses, a red and white striped top, a bobble hat (ideally in white) and a pair of blue trousers or jeans. Kids could even wear a blue or denim skirt if you have white and red stripped tights. 

Chimney Sweep 


"Charlie Stemp's mysterious Jack-of-all-trades Bert is excellent, a dazzling dancer" - Financial Times

A post shared by Mary Poppins Musical (@marypoppinsmusical) on


Find some dull clothes from the small bag that you no longer want and start distressing them by making them look out of shape, ripped and dirty.

Brown, grey and black clothes work best for chimney sweep costumes and you could look like an extra from Oliver Twist or Mary Poppins! Use spots of black or brown powder make up on the face to create the soot effect and add a baker boy hat to complete the look. You could even find a prop that resembles a sweep! 

Mildred Hubble


Got a witches hat somewhere that you often pull out for Halloween? Use it to recreate the look of Mildred Hubble from the popular book series, The Worst Witch. Find a grey school pinafore, black tights, white school shirt, stripy tie and pull over a DIY black cape and your little one will look fit to attend Miss Cackle's Acadamy for Witches in no time. 

Mr Bump

We've all got bandages from the first aid box in the house! Recreate the look of the iconic Mr Bump from the Mr Men series by dressing up your child in a blue outfit before wrapping up their head and midriff with bandages! 

Queen of Hearts

You'll need a pack of cards for this costume! Find a black or red dress in your childs wardrobe - ideally one that they may not wear again and start to stick the heart cards onto the dress. You could even make a funky collar for the dress out of the cards! If you have a bit more time to spare, you could even stitch some hearts onto the dress too. For the crown, use any playing cards or even better some shiny gold card if you have any. Complete the look by taking inspiration from Helena Bonham-Carter's Queen of Hearts make-up from the 2010 Alice in Wonderland film with lipstick shaped as a heart and bright blue eyeshadow! 

Books to inspire your World Book Day costumes 

  • Roald Dahl books have plenty of characters in to get you inspired, from Willy Wonka to Miss Trunchbull 
  • The Mr Men series provides plenty of costume ideas for parents. 
  • The Winnie the Pooh series has plenty of iconic characters for little ones to dress up as
  • There are so many weird and wonderful Harry Potter characters to get inspired by


Got any photos of your tots to send us? We'd love to see them! Let us know on Facebook or Twitter!

Now read: 

10 children's books guaranteed to give parents the giggles

The top 15 audiobooks for children

6 ways to entertain a toddler on a rainy day

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Charlotte is an award-winning journalist who's interviewed six Oscar winners, a Greek princess and a Cbeebies presenter.

She's written for GLAMOUR, Vogue, Stylist and The Independent during her career, and, though she writes about beautiful children's clothes, her own two children refuse to wear them.

She likes sunshine and log burners but not at the same time.  


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