'Catherine M' has sold over 120,000 paperbacks, and continues to ride high on Booktrack. The Belle de jour website already has a large, dedicated fanbase of men and women. As Mil Millington proved, books spawned from websites dealing with relationships and sex can do incredibly well. Belle has agreed to write a column for Rowan Pelling at The Erotic Review and is receiving a stream of article requests across a spectrum from The Daily Telegraph (which she has accepted) to The New York Post. The book has sold all over the world, and been optioned by Channel 4 .
Belle de Jour is the nom de plume of a London call girl. She is in her mid-twenties, and lives and works in London. Despite the best endeavours of the press, she remains anonymous.