The fab photos capture pupils in the Larne, Carrickfergus, and Newtownabbey areas between 2012 and 2016.
Can you spot anyone you know?

21. World Book Day
Reuben, Rebecca, Lily, Lewis and Jake celebrated World Book Day at Mossley PS in 2014. INNT 11-215-AM Photo: Alistair Mawhinney

22. World Book Day
St Anthony's Primary School P1 pupils pictured on World Book Day 2014. INLT 11-014-PSB Photo: Phillip Byrne

23. World Book Day
World Book Day for the P1 pupils at St MacNissi's Primary School in 2014. INLT 11-012-PSB Photo: Phillip Byrne

24. World Book Day
Primary 3 pupils at Glynn Primary School dressed in their pyjamas for World Book Day 2014. INLT 11-032-PSB Photo: Phillip Byrne
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