Another year, another wonderful collection of World Book day costumes from our favourite celebs.
This time, Victoria Beckham has led the charge with daughter Harper Seven's dressed as everyone's favourite kick-ass witch, Hermione Granger.
Uploading a photo of Harper stood on the stairs and throwing a pose that would have the dementors quaking in their cloaks, Victoria wrote, "It’s book day!! Kisses from Hermione #harrypotter #harperseven X".
And fans were loving the imaginative costume, with one writing "Love it she’s a beaut 😘", and another saying, "😍 Very good choice 👍🏽".
We're inclined to agree.
But Vic wasn't the only celeb mum to get involved this year. Rochelle Humes smashes out of the park every year and this year was no exception, with her kids dressing up as Bing Bunny and Matilda - arguable the OG book worm.
And Coleen Rooney dressed her son Kit up as World Book Day favourite The Cat in the Hat.
But it wasn't just the kids who got to have some fun this World Book Day.
TV presenter Amanda Holden also got into the spirit by dressing up at Tinkerbell from Peter Pan and posted a hilarious video of herself rocking the costume at the office.
Respect.
CHECK OUT: these ADORABLE world book day costumes from our fave celebs
World Book Day costumes celebrity children slider
1 of 16Denise Van Outen's daughter Betsy
Denise Van Outen is a big fan of #WorldBookDay and this year her little girl Betsy dressed up as Roald Dahl's Matilda. Not only that, Denise's sister got on on the action too and dressed as (a very convincing) Pinocchio, from Carlo Collodi's children's classic of the same name.
2 of 16Denise Van Outen's daugther Betsy
In 2017, Betsy into the spirit by dressing him up as J. K. Rowling's Harry Potter. She wrote: "Our little Harry Potter lost a tooth yesterday ud83dude01"
3 of 16Rochelle Humes
Rochelle Humes became a first time published author last year when she published her OWN children's book, The Mega Magic Hair Swap. She said she wrote it to encourage her daughter Alaia-Mai to love her natural curly hair.It looks like the book had the desired effect – just check out that adorable caption!
4 of 16Clair Richards daughter
Not strictly a costume – but at ex-Step Claire Richardson's daughter's school, they went for something a little different.Yes, that's a potato dressed as Alice in Wonderland.
5 of 16Jamie and Jools Oliver's daughter Petal
Jamie Oliver's wife Jools dressed one of their little girls up as Matilda from the book by Roald Dahl. She's dressed in a school uniform with a pile of books under her arm and a big ole grin on her face. Cute! Jools simply captioned the photo: "Matilda ud83dudc99"
6 of 16Gemma Bissex's daughters
FormerHollyoaks actress Gemma Bissix is another mum who just loves going full on and dressing her sproglings up for World Book Day. Here's Juliette dressed as Strawberry from Ben and Holly, and Vienna as Poppy from Trollz.
7 of 16Gemma Bissix's daughter Juliette
A few years back, she had Juliette dressed up as a lion from her fave book: "Happy #WorldBookDay ud83dudcda Juliette will mostly be Mr Lion ud83eudd81 she wouldn't wear the mane I made for her so her hair can be the mane!!"
8 of 16Darren Day's daughter Maddy
West End performer Darren Day dressed his little girl Maddy up as Veruca Salt from Charlie and the Chocolate Factory by Roald Dahl, writing: "Our Maddy channeling Veruca Salt"
9 of 16Fearne Cotton's son Rex
Fearne Cotton is known for making sure her children's faces are never shown online, and if she does upload one, their faces are always obscured. She's shared a rare snap of her son Rex, with the caption: "World book day is like ever other day for Rex. He wears his squid hat. The only fancy dress he'll tolerate"
10 of 16Geri Horner's daughter Bluebell
Geri Horner's little girl Bluebell has gone off to schoolas the Queen of Hearts from Alice's Adventures in Wonderland by Lewis Carroll. The Spice Girl captioned the super cute snap: "Bluebell - queen of hearts ❤ufe0f doing her make up. ud83dude0d"
11 of 16Rio Ferdinand's children Lorenz, Tate and Tia
Even footballer Rio Ferdinand got his kids in the spirit! He wrote: "My little ones have gone for it this morning!! The make up was on point too!!"
12 of 16Nicole McLean's son
Nicola McLean's little boy dressed up as his favourite football player this World Book Day, but it still counts because Frank Lampard wrote an autobiography. Clever, heh?
13 of 16Nicola McLean's sons Striker and Rocky
In 2017 she shared this lovely photo of her two boys Striker and Rocky as Odlaw the baddie from Where's Wally and Clark Kent, Superman's down-time alter ego. She captioned it: "So cute #worldbookday #odlaw #clarkkent"
14 of 16Kate Garraway's children Darcey and William
Good Morning Britain presenter Kate Garraway has shared a snap of her two kids captioned: "Chuffed to bits with my kids last minute costumes for #worldbookday- can u guess who they are meant to be?" But we think we've worked it out...
15 of 16Clemmie Hooper's daughters Anya and Marnie
Midwife Clemmie Hooper has become rather famous in the last few months, especially after her book, How to Grow a Baby and Push It Out: A Guide to Pregnancy and Birth Straight from the Midwife's Mouth, was released last month. She captioned her pic: "Sophie from the BFG and The Illustrated Mum"
16 of 16Wayne and Coleen Rooney's sons Kai and Klay
Coleen Rooney got her two eldest sons Kai and Klay in the spirit by dressing them up as Horrid Henry! She wrote: "World book day 2017.... double trouble!! Horrid Henry x2"
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For those not already in the know about World Book Day, it's a global initiative set up by UNESCO to encourage kids (and grown ups!) to get stuck into more books, by dressing up as their favourite characters from the best stories.
Schools up and down the country and in over 100 countries worldwide participate in the tradition, which has been running for 25 years now so these celebs are by no means the only parents to have got busy stitching, cutting and gluing (and a touch of face-painting) to create adorable costumes for their kids.
And let's be honest, it's never too early to get planning for next year, so we've compiled some videos that show you exactly how to create some prize-winning costumes for World Book Day 2021.