Many stars would like us to believe they "eat like a horse" and just have a "naturally fast metabolism". Truth is, most of them haven't had a decent bite to eat in decades.
With teeny tiny Miranda Kerr recently raving about the benefits of coconut oil, and popsicle mum Victoria Beckham starving off the baby weight as we speak, we thought we'd take a look back at some of the craziest diets ever undertaken by Hollywood's hungry waifs.
So... Who's eating cookies to shed the kilos? Who lets the colours of the rainbow dictate her diet? And who has her face analysed by an expert to determine her nutritional needs?
Find out in our Extreme celebrity diets gallery…