Jamie Oliver in a fat suitJamie Oliver in a fat suitWhen you've got something to prove, (like how unhealthy junk food is), you can't go far wrong with a fat suit.

That's been Jamie Oliver's thinking.

What, did you think he'd been over-indulging at his Fifteen restaurant?

Jamie piled on the extra pounds to promote the new series of Jamie's School Dinners on Channel Four.

He spent four hours in the suit, whilst filming a trailer for the series - during which time he even broke a scooter...

The chef has been campaigning to ban fast food at schools which offer free meals.

In the new series, he's expected to show that the government has yet to implement his suggested changes.

Jamie's School Dinners will be back on our screens in the autumn.