The 28-year-old star plays prostitute Belle de Jour in the ITV2 show and she admitted her husband Laurence Fox doesn't mind watching her sex scenes but her dad isn't so keen.
She said to Britain's more! magazine: 'Laurence caught the last series and really enjoyed it. But my dad doesn't watch it!'
The actress gave birth to her little boy Winston two years ago and said she isn't sure when baby number two will come along.
She said: 'Who knows? I was lucky, because I had Winston when I was quite young. A lot of my friends are pregnant now, which I'm really pleased about because it's lovely to do it all together.'