We asked readers of the Blackpool Gazette to share their little one's fabulous costumes and they did not disappoint.
In fact we received so many great pictures - nearly 300 - that we have had to make multiple photo galleries to show them all off.
We posted three galleries yesterday- you can find the link to all of those in the later piece here - but have since decided that there is still plenty of time to share even more of your wonderful pictures!
Our photographers were also able to get down to some schools to capture the scenes so see below for those photos and more of your own submissions...
1. World Book Day FC 1
A pupil at Kirkham and Wesham Primary School celebrates world book day | Lucinda Herbert
2. World Book Day FC 2
Kirkham and Wesham Primary School pupils as Harry Potter characters | Lucinda Herbert
3. World Book Day FC 3
Staff and pupils from Gateway Academy dress up for World Book Day | National World
4. World Book Day FC 4
Gateway Academy pupils as Charlie and the Chocolate Factory characters | National World
