Dr. Who cutie Billie Piper takes sex lessons from dominatrix.

No! Not my Billie! She's too clean cut! Noooooooo!
Billie Piper is taking sex lessons from a dominatrix.
The newly engaged stunner is swotting up for her role as a high-class hooker in new TV show, Diary Of A London Call Girl.
With the help of her leather-loving instructress, Billie is learning how to master the arts of flogging, S&M and bondage.
An ITV spokeswoman said: “They do have a dominatrix on set to advise. It's about prostitution and they want to get it right."
Billie, who dons a string of sexy outfits for the role, is playing mystery hooker Belle de Jour – who thrilled thousands across the globe with her online diary of her sexploits.