The day raises money so that every child can have a book of their own. More images will be added throughout the day as they come in - so make sure you keep refreshing!
1. Asher, four, from Gainsborough, as Superman
2. Autumn, six, from Gainsborough, as Sleeping Beauty
3. Bryson, six, went to school as an Oompa Loompa
4. Freddie, five, and Tayla, seven, from Gainsborough as the Mad Hatter and Alice in Wonderland