Today, for those who don't know, it's World Book Day, where every child in full-time education in the UK is given a £1 voucher to spend on books in a bid to get children into reading.
To celebrate the day, youngsters are also encouraged to dress-up as their favourite book characters.
This year’s World Book Day - the 24th one in history - falls on Thursday 4 March 2021. The event is always held on the first Thursday of March each year.
The date was chosen because it was the anniversary of the death of William Shakespeare and Inca Garcilaso de la Vega, a prominent Spanish Chronicler.
Some school children from Northamptonshire are now barely recognisable as they get into the spirit of the day.
So-far, we've seen Harry Potter, Captain Jack Sparrow, superheroes and some animal magic in a range of outstanding outfits from all of you.
Thank you to everyone who sent a photograph to celebrate World Book Day - you can still send in your photos here and we hope you enjoy your day.
A full list of the books available using the £1 scheme is available to view on the World Book Day website.
29. The Very Hungry Caterpillar
The Very Hungry Caterpillar lives on in Northamptonshire with a new generation of book worms.
30. Toy Story
Breyenn, 3, was off to "infinity and bey-" nursery school today as he arrived as Buzz.
31. Up!
Kettering childcare practitioner, Georgia, became explorer Russell today from Up! and joined in with all the children.
32. Trolls
There's something a little different about Amelia today as she turned her hair pink to become Queen Poppy from Trolls.