The single actress - who is divorced from Black Crowes rocker Chris Robinson - relieves her sexual frustration by watching X-rated films.

When asked if she has been watching soft pornography now she hasn't got a partner, Kate joked: "What are you talking about? I go right for the hard stuff!"

Kate, 29, is comfortable talking about sex and recently admitted she finds monogamy difficult because she is "ruled" by her "sexual energy".

The 29-year-old actress - who has a four-year-old son Ryder with Chris - said: "I got into this very controversial discussion once. I was married at the time and I was asked, 'Do you think monogamy is possible?' And I said, 'No, I don't think we are made to be monogamous, we are animals.'

"If you have that personality, it's never going to go away because you are ruled by your sexual energy."