Kate Middleton weight loss: Is the Duchess a fan of the Dukan Diet?

The Duchess of Cambridge shed all of her post pregnancy weight in a matter of weeks.

Observers have gushed over the mum-of-three’s appearance this month, with many asking how she manages to maintain her svelte figure.

In the past, the royal has reportedly used the Dukan diet for weight loss.

So what does the regime entail and what other celebrities are fans of it?