3. Harry Potter and the Half-Blood Prince
Author: J.K. Rowling
Copies sold: 65 million
Harry Potter is without a doubt the most famous child book character ever created and the sale numbers on each of the seven books verifies that. With a much darker feel than the previous novels, J.K. Rowling fed her fans’ magic addiction by focusing on the evil Lord Voldemort’s past and his identity as Tom Riddle. However, keep your tissue box at hand because the tragic ending will definitely have your young one in tears.