What's Cameron Diaz's secret diet?

Cameron Diaz's trainer has revealed the actress likes an "upside down" diet which sees her eat carbohydrates in the morning and proteins and vegetables in the evening.

The 38-year-old actress' trainer Teddy Bass says the blonde beauty watches what she eats, and though she generally has a balanced meal plan, she isn't afraid to indulge in her favourite calorific treats, reports contactmusic.com.

"Her diet is an upside-down one where you have your carbs at the beginning of the day then taper off, so in the evening you just eat protein and vegetables," he said.

"She'll eat junk food if she feels like it but if she fancies a burger, she'll just have a few bites," he added.