See Hot Photos of Billie Piper, From Secret Diary of a Call Girl, on Fancast

The inner workings of the high class escort world come to TV next week on Showtime’s Secret Diary of a Call Girl. But you spend time with sexy star Billie Piper for free by oogling Fancast’s photos on the jump. Then enjoy a more extensive photo gallery. Who is Piper? The unctuous British actress, 25, signed a record deal at 15, then turned in a variety of acclaimed performances for the BBC in The Canterbury Tales and Bella and the Boys. But it was her role as Rose Tyler in “Doctor Who” that brought her a

string of awards and admirers. That was followed by the lead in Secret Diary, which is currently shooting its second season in London. “She’s so tiny and delicate and I couldn’t get over the fact that the doctor’s assistant [on Dr. Who] was going to be playing me,” says the real Belle De Jour, whose bestselling diaries of her double life as a call girl are the basis for the series. “She brings a lot of intelligence to her acting, which I very much respect.”

[see more hot Piper photos in this Fancast gallery]