Nigella gets a trainer to lick her into shape

Art collector Charles Saatchi is a fraction of the man he used to be after losing nearly four stone on a new vegetarian diet.

Now his glamorous wife Nigella Lawson, 48, is following suit after piling on the pounds.

Piling off the pounds: Domestic goddess Nigella Lawson is secretly meeting a personal trainer to get back into shape

The domestic goddess, who admits to a weakness for calorific treats, has embarked on an intense exercise regime in a bid to lose weight.

Says a chum: "Nigella has been secretly meeting a personal trainer to do an aerobic work-out session tailored to help her get back into shape.

"She has already lost quite a bit of weight and is also adapting her diet.

"She's even enjoying some of the vegetarian meals Charles has been eating to keep his weight down."

It's all a far cry from the days when, as Nigella revealed, the couple would "climb into bed together with a bowl each of cereal, ice cream and biscuits. It's Charles's idea of heaven."

• Following in Nigella's impressive wake, Peaches Geldof has also embarked on a healthy-eating regime.

"Peaches has totally cut out fast food from her diet and has lost a lot of weight in recent months," says a pal.

"She is preparing to make a show for MTV and when she saw herself on screen during playbacks of the pilot she vowed to lose some weight.

"She used to eat a lot of burgers but has sworn she will resist them from now on."

In chubbier times: Charles pictured with his sultry wife - Nigella