Sharon Stone has credited regular Pilates workouts for her healthy body.

The 59-year-old actress has cut an enviable figure for decades, and she has now revealed that her secret to looking good is regular workouts, especially in Pilates, which looks at the art of controlled movements.

She said: ''I do Pilates, I have a machine in my house. Or I go to a gym and circuit train depending on what mood I'm in. Or I might put on music and dance my brains out. I'm not the person who will get on a treadmill and stare at a wall.''

Part of Sharon's toned physique also comes from her diet, which sees her steering clear of processed food, caffeine, sugar and alcohol.

She added: ''I don't eat processed food. I don't drink caffeine, and very rarely will have a soda or alcohol. But I eat meat and dark chocolate. I sugar my tea if I feel like it. I have celiac disease, so I don't eat gluten. Otherwise, I just eat like a person - whatever I'm hungry for.''

However, the 'Casino' star insists that the most important thing that makes her so stunning is having ''real inner beauty''.

She said: ''Also, for me, it's more about real inner beauty. It's important to have a philosophy or way of life or faith that keeps you balanced. For me, that has been Buddhism. It's something that brings you back to center, and is really the key to serenity and beauty - an internal sense of form and elegance.''

The 'Basic Instinct' actress also admits that she doesn't always spend a fortune on looking fabulous either, as she cuts her own hair.

She told the New York Times: ''I cut my own hair. The first time was when I was with a French hairdresser years and years ago, and I had long hair. He said pull all your hair up and then just cut off the ends and you'll have all the layers you want. Every once in a while, when I get a haircut from someone else, hairdressers will complain, 'Who did this haircut?' But the truth is no one ever likes someone else's cut.''