To celebrate the release of Jacqueline Wilson's 100th children's book, we're giving away £100 John Lewis vouchers, a copy of her new book Opal Plumstead and an exclusive goody bag for one lucky winner. Runners up will receive an Opal Plumstead goody bag and copy of the book.
Opal Plumstead is the brilliant new story from one of the nation's best-loved authors, starring her most outspoken, fiery and unforgettable heroine yet: Opal Plumstead, schoolgirl, sweet factory worker and Suffragette. Read more about the story and watch an exclusive video of Jacqueline Wilson talking about reaching the milestone of writing 100 children's books here.
To be in with a chance of winning, let us know your favourite Jacqueline Wilson book and why on the discussion thread below. The competition closes on 31 December and we'll announce winners on 5 January 2015. We look forward to hearing your thoughts!