Kirsten Dunst insists her skinny physique is nothing to do with a diet - in fact she eats whatever she wants whenever she wants.

The Spider-Man actress credits a fast metabolism with her svelte shape, and urges others eager to lose weight to follow her guide to staying slim.

She says, "When people ask me how I stay in such great shape I always tell them the same thing - eat whatever you want. It's only when you start starving yourself that you mess up your metabolism and our body suffers."