Diets A-Z: Celebrity diet secrets

Sophie Dahl drinks green tea

Sophie Dahl's fuller figure was a national obsession in the 1990's, but since dating jazz musician, Jamie Cullum, there is more talk about Sophie Dahl's height than weight. The model is six foot tall compared to her 5 foot 6 inch beau.

Sophie was known as Britain's largest model and was proud to be an unconventional when she showed off her Monroesque figure in the infamous Opium adverts.

Now Sophie is slimmer than ever. She claims the old days were 'puppy fat' and that she wanted to lose weight to be able to swap clothes with her friends.

Dahl is said to have taken tips from London?s hip Body Doctor, David Marshall, to help her shed two stone, seven pounds and three dress sizes. Marshall encouraged Sophie to drink green tea to help flush the toxins from her body and it's said the regular brews helped her lose weight. She says, 'I slimmed from a size 16 to a 12 by sipping cups of green tea, which helps to speed up the metabolism.'

Kelly ditches biscuits and dances

Kelly Osbourne wowed audiences recently with her sexy and svelte transformation as Mama Morton in the musical Chicago - even if a little airbrushing was rumoured to help in the publicity shots.

Osbourne says that moving to London, without the US size food portions, and taking up dancing has helped her drop dress sizes and lose two and a half stone.

But it's not just the gruelling West End schedule and corseted look that have slimmed Ozzy's daughter. Kelly is rumoured to have ditched her favourite fix - Jammie Dodger biscuits. Her hair stylist Terry Longden says, 'There was never just one packet in her dressing room - they left a case. Nobody was allowed to touch them. We knew better than to come between her and her Jammie Dodgers. I pinched one and she chased me down the tour bus.'

Since breaking the biscuit habit, Kelly says weight loss has increased her pulling power, 'The good-looking boys only look at me now because I've lost so much weight - they would never have touched me before.'

Gwyneth stays organic

Since then she has resumed a healthier eating plan and she admits she's not as strict on herself as she once was: 'I'm not as stringent as I was in the past. I used to do a very strict macrobiotic diet, but then, during my pregnancy, I couldn't eat brown rice. It made me feel so sick. At first all I wanted were biscuits. Now I'll have cheese once in a while or white flour, but I still believe in whole grains and no sugar.'

Now, after the birth of her second child Moses (born in April 2006), Gwyneth sticks to an organic diet complemented with yoga and alternative health therapies. She says. 'I try not to eat any over-manufactured foods that aren't naturally welcome in my body. I try not to eat anything 'toxic' that will drain my energy.'