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.Some school children from Northampton are now barely recognisable as they get in
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.
13. Toy Story 2
Sister and brother, Alicia and Andreas, have dressed up as Jessie and Woody from Toy Story 2.
14. Peppa & The Police Car
Lily, aged 2, is probably Northampton's biggest Peppa Pig fan and has dressed up today as PC Lily.
15. Little Red Riding Hood
These twin sisters, Adriana and Annelia, 7, have dressed up today as Little Red Riding Hood and the Big Bad Wolf.
16.
Talented Harry has transformed today into Thomas the Tank Engine - and even made his own train costume... with a little bit of help from mum and dad.