Katie, who chooses the plots for her books, penned by ghost-writer Rebecca Farnworth, said: "I think it's brilliant that it's number one. It just goes to show people that when I really put my mind to something it makes number one and it's brilliant and I'm absolutely over the moon," reports the Mirror.
Hundreds of screaming fans turned up to HMV on London's Oxford Street to see the 32-year-old mother-of-three sign copies of her new book, which tells the story of a model from Brighton who rekindles her relationship with her ex.
Asked if there were any parallels between Angel's feelings for her ex and her own towards ex-husband Peter Andre, she said: "No, it's a novel and it's fiction." The reality TV star also confirmed the trilogy of Angel novels are to be made into a Hollywood film, as is her own autobiography. "I've already got a director and producer in America who are going to do a film about that," said Katie.