Quantum physics is quite interesting. All these tiny particles are there as much as they're not there. That to me is very, very interesting. And how our thoughts change the outcome of an experiment, I think that's all quite spiritual.

I'm a very lazy, stay-at-home kind of girl.

I use a lot of natural products, I get facials, and I drink a lot of detox tea.

Well, I was fourteen in Texas. But I looked twenty-five.

My mother and my sisters - five girls - were crazy about glamour and Hollywood movies. I styled myself on Veronica Lake and Marlene Dietrich.

Yves Saint Laurent was my first fashion show. I wore his tuxedo. And Helmut Newton was my first photographer, in 1973. I was really very lucky. I had an amazing career.

I love doing theater so much - being in front of an audience and seeing how a character grows and develops with every performance.

The world's my oyster. But it worries me, all this showing off about being happy. Life is so precarious, and I know terrible things can happen. At the moment, everything is happy.

I love good rock'n'roll, blues and jazz, gospel, and a little reggae.

My long, blonde hair has been my trademark ever since I started modelling in the Seventies, when I was scouted sunbathing in St Tropez.

Mick Jagger and I just really liked each other a lot. We talked all night. We had the same views on nuclear disarmament.

Beauty makes life easier. People want to do things for you. They want to marry you and pay for everything.

I have a lot of energy, and if I don't keep myself busy, I go crazy. I alphabetise the spice rack, separate the Lego from the Playmobile, colour-code the knicker drawers - it's scary! My house loves it when I'm working so the linen cupboard can get a rest. I just don't sit around.

The idea of getting old is horrific, but I don't want to make it worse by becoming a grotesque caricature. A lot of people have made that mistake of trying so hard to hang on to their looks that they make themselves look really scary.

When I moved to Paris at 16, I held a dinner party in my first apartment and served only red wine, French fries, and mashed potatoes. Unable to cook, I relied on people taking me out.

Divorce is not the end of the world. It's worse to stay in an unhealthy marriage. That's a worse example for the children.

I think if I weren't so beautiful, maybe, I'd have more character.

To me, it's not the end of the world if I end up not being with someone. I love romance. I love sex. I love men's company, but I don't feel I have to be married. Men are a wonderful part of life, like chocolate. But my life goes on whether they're there or not.

I used to hang out with Salvador Dali a lot. He was such a nice man. I really liked his wife Gala, too. People say that she was tricky, but she was never difficult with me.

I studied drama in high school, and when I was 18, I studied at the Actors Studio in New York. Then I moved to London when I got engaged to Bryan Ferry, and I studied at the National Theatre there.

Then, in 2000, John Reid, Elton John's former manager, asked me to audition for the stage version of The Graduate he was producing. So I worked on it, got the part, and after three weeks' rehearsal I was on stage!

I've been extremely lucky in that I've been a very successful model for a long time. So now I'm an actress and a mother. I'm a theatre rat, which I always wanted to be - I've wanted to act since I was 14 - and I never get bored, ever, and I have four beautiful children. I am, in fact, so darn lucky.

A lot happens at 50, the best thing being that you just don't care anymore. At 40, you still care. At 30, you care way too much - and your twenties are quite frankly a nightmare. Bring on 60, I say: just imagine the joy of having grandchildren.

Day to day, I love eating soup and salad; lots of stews, fish, chicken, meat and veg. I eat everything, and I don't have any fads.