Schools across the city marked the annual event, held on the first Thursday in March, with classes posing for colourful group photos showcasing a fantastic mix of costumes inspired by beloved books and stories.
From classic characters to modern favourites, youngsters put plenty of imagination into their outfits as they celebrated a day designed to inspire a love of reading.
Take a look through our gallery below to see eight fantastic group photos of pupils celebrating World Book Day in Preston:
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