And I think of that again as I've written in several of my beauty books, a lot of health comes from the proper eating habits, which are something that - you know, I come from a generation that wasn't - didn't have a lot of food.

It is unseemly to undress on stage. I won't do that.

I think health is another exceedingly important thing.

The cosmetics industry has much to answer for. It's a multi-million- pound confidence trick based on giving women endless hope, courtesy of overpriced little pots.

Certainly there are dozens of over-50 actresses who look great: Sophia Loren, Susan Sarandon, Ursula Andress, Stefanie Powers, Raquel Welch, Barbara Eden, Joanna Lumley, Linda Gray - the list is endless, and these are just the actresses! I have many friends in their 60s, 70s and 80s, not in the limelight, but who all look absolutely stunning.

When I was 49, I posed for Playboy - I was very flattered to be asked. I was quite honoured, really, considering that most of the models they feature are in their twenties.

I say, 'Use it or lose it.' I have my own fitness regime, which is centred around stretching, free-weights and fast walking. I also have a trainer half of the year, as I spend my summers in the south of France where I swim a lot.