We asked readers of the Lancashire to share their little one's fabulous costumes and they did not disappoint.
In fact we received so many great pictures - over 300 - that we have had to make multiple photo galleries to show them all off.
6. World Book Day 6
L: Katie aged 6 & Poppy aged 9 as two blind mice. R: Ronnie age 4 as forky. | submit
7. World Book Day 7
L: Tommy, 4, as Postman Pat with his black and white cat. R: Kielan, age 2, as The Hungry Caterpillar. | submit
8. World Book Day 8
L: Arlo age 5, Marshall from Paw Patrol. R: Eli aged 8 as CatNap. | submit
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