Billie Piper has revealed she is hoping to take her hit TV series Secret Diary Of A Call Girl to the big screen. The 27-year-old mother-of-one is currently filming her fourth and final series as sexy high-class hooker Belle for ITV2, but told The Sun she'd like to reprise the role in a film. Billie said: "I'm about to start filming the fourth series and then that will be it. I'm not sure it has legs past four seasons so we're trying to develop a movie." The show has apparently become a smash hit in the US after being shown on American TV channel HBO and now there are plans for the unshockable escort Belle to break even more sexual taboos on the big screen. Hollywood bosses apparently hope it could follow in the footsteps of Sex And The City, which began life as a newspaper column, then a book, before becoming a hit TV series and now a box office smash. The TV series - based on the books and blog of real-life escort Belle de Jour - already features bondage, threesomes and S&M orgies. Billie revealed she had even managed to persuade actor husband Laurence Fox to watch her strip off and cavort with 30 to 40 men per series. "We didn't watch it for ages, then recently we watched an episode or two. "It was actually a lot more palatable than I thought, and certainly more than he thought it was going to be - so that was a relief!"
