Cameron Diaz says the secret to her shape is control.
The actress has explained how disciplined she is with her diet.
The svelte star says her attitude isn't to deprive herself of anything, but by watching what she eats and planning her meals she can maintain a healthy weight.
"It's about controlling something so that you can have more,'' Diaz has told the British edition of Elle magazine.
"It's my body - I don't have to have somebody else making the choices for me. So I take it with me, and I set up my life so I can do that. If I'm out for the day running around taking care of errands, especially in Los Angeles, most of the time I show up with my own food.''
