It's really important to draw the line on what we do as actors.

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.

When I was younger I thought I'd meet the man of my dreams, get married and have a child, but it all went higgledy-piggledy. Never say never, though.

My whole family is quite petite, so I have good genes on my side. But I find it quite tiresome that we have to keep talking about sizes and how much weight we can lose.

These women need to feel that we're all aware of what they may be going through, to give them the confidence to speak out.

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.

It's so important to raise awareness of this problem that continues to affect 1 in 4 women at some point in their lifetime, regardless of career, wealth or background.