The Sex And The City actress admitted to People that keeping her slim figure has not always come easy and has required serious effort.
"I've been dieting my whole life because I have a tremendous appetite," she said.
"It gets harder because parts of my body don't want to be on a diet, but at the same time it gets me up in the morning to work out."
However, Cattrall insisted that developing good eating habits as a child has eased the process, explaining: "This generation of women that I'm in, we have been brought up with Jane Fonda workout tapes and fresh air is good for you and exercise every day and drink eight cups of water... and it's paid off at this time of my life.
"I don't do it for a guy. I do it for me. It's about taking care of yourself."