World Book Day aims to promote reading for pleasure, offering every child and young person the opportunity to have a book of their own.
With many children still at home, organisers were encouraging families to dress up at home and get involved online.
According to Google search trends, Roald Dahl favourite Matilda was set to be the most popular costume choice, followed by Wimpy Kid. Harry Potter and Alice in Wonderland are also favourites.
Pictured is three-year-old Louisa Pullin, who attends Artemis nursery in Hollington. She dressed up as a veterinarian from Mog and the Vet. Brother Liam, six, who attends Sandown Primary School, dressed up as Officer George.
If your children are taking part you can email photos to [email protected]
See also: Plans revealed for Hastings Pirate Day