Post-birth Billie to film Call Girl 3

Billie Piper will reportedly begin filming the next series of Secret Diary Of A Call Girl just weeks after giving birth.

She is currently filming the second series of the racy ITV2 show using a body double to hide her pregnancy, according to the Daily Mirror. And Billie, 25, has reportedly signed up for a third series.

A source told the newspaper: "Billie clearly isn't going to be a stay-at-home mum.

"She has already signed up for another series of Call Girl and there are other work offers that she is considering."

Billie told the Daily Star how much she enjoys working in the raunchy series. "I enjoyed shooting sex party scenes the most. I've always been intruiged about swingers' parties.

"The rubber dress I wear for the dominatrix stuff looked great, but it was a b**** to wear under hot studio lights."

The former teen pop star - who married husband Laurence Fox on New Year's Eve - is reportedly due to give birth before the end of the year.

She will apparently take a short break of maternity leave before she begins filming again in the New Year.