There were reports of me using fat-sucking machines and all sorts of silliness. All I did was walk a lot and breast-feed. I've never been on a strict diet. I just don't overeat, and I don't eat if I'm not hungry.

And the most important thing - apart from telling a good, believable story, and being a true character - is to be someone the audience will care about, even if you're playing a murderer or rapist.

There were reports of me using fat-sucking machines and all sorts of silliness. All I did was walk a lot and breast-feed. I've never been on a strict diet. I just don't overeat, and I don't eat if I'm not hungry.

I've been onstage once for one performance with four days' rehearsal.

I've never been onstage in my life.

Eating at home is important for us, because we eat out so much when we're away. When I'm at home I cook a lot and we eat pretty healthily. I'm not a massive vegetable fan - I've got better since I discovered how to undercook them.

I'd like to put the record straight about that. I've been labelled an irresponsible role model for young mothers, but none of it is true. I couldn't even walk for two weeks after the birth, let alone exercise. I ate very healthily all the way through my pregnancy and afterwards. I didn't do anything extreme.