[Sundae]

Good food, attitude and genes.
Gillian McKeith is a fanatic. She is also a witch as Dana says. And a coward and a whiner, as we saw on last year's I'm A Celebrity Get me Out of Here.

Nigella eats well. But probably has the same attitude to fast food as Gillian, just more puzzled and less strident.

Her genes have meant she's lucked out on the skin front, but if she carries on smoking she'll have to be luckier still to avoid the effects. If she was Gillian's weight it would show much more. Luckily, she doesn't want to be, and good for her.

Here is her Dad. Nigel Lawson (then Chancellor of the Exchequer) in the blue tie.