Sienna MillerSienna MillerWell done to Sienna Miller for enjoying nothing better than a good old feed.

We're so fed up of hearing about stars turning their noses up at tempting grub in favour of special diet-type fayre.

So, how do we know that Sienna enjoys her food so much?

Well, Jamie Oliver was kind enough to point it out.

The celeb chef told the Daily Mirror: "I did the Burberry 150-year anniversary party in New York last week and cooked roast beef with all the trimmings.

I was sitting next to Victoria Beckham and she was on the salad but Sienna was getting stuck right in. She doesn't stop eating that girl!"

Posh, what were you thinking, turning down a roast in favour of a salad?

Jamie OliverJamie OliverIt's just something us Showbiz girls could never do.

And cheeky Jamie had another celeb gem, courtesy of his wife Jools.

Jessica Alba was at the posh dinner, and Jamie revealed: "Jools overheard her asking: 'What's this Yorkshire pudding s***?'

"They don't understand. You know what Americans are like."

Jamie, we commend you on your mission to bring top British nosh to the upper echelons of celebdom.