A tiny Harry Potter book written by JK Rowling has been sold at an auction for a massive £11,000.
The leather bound booklet, which is just 2.5 cm tall, is a guide to everything Harry needs for his life at Hogwarts School.
Twenty-four celebs were given mini blank books to write what they like in, which were then sold for charity.
The top bid was £17,000 for a book by Muhammad Ali. David Beckham's stick drawing effort raised just £3,000.
Rowling's book, which included pictures of Harry's witch's hat, broomstick and his trademark wire-rimmed glasses, was the third most expensive lot.
Madonna's volume, containing lyrics to her song American Life and a picture of the US flag, sold for £8,000.
The auction was organised by the magazine Tatler and raised a total of £125,000 for the London based homeless charity the 999 Club.