Parties: The heat is on at posh Glasto

"You're going to get me into trouble," said Natalie Imbruglia to Sam Branson as the model and Virgin heir sidled up to put his arm around her, to the delight of hordes of snappers – and not altogether noticeably distressing the petite singer.

Lady Victoria Hervey could only look on nearby in a gold dress that barely covered her backside – perfect fodder, one would think, for the former Alan Sugar punching bag Raef Bjayou , as he tried to collar celebs to interview for his new job as roving reporter for The Hotel Channel.

It was the Cartier International Polo match in Windsor's Great Park last Sunday, and what was once the refuge of braying blue bloods has become one of the most glamorous dates on the social calendar, packed with celebrities.

But how to look good in the blistering heat? Marie Helvin and Dita von Teese seemed to have it right as they glided serenely past on a golf cart, though Salman Rushdie was not doing too badly by surrounding himself with glamorous girls and delicately sipping tea; and Harry Potter's chum Emma Watson managed to magic up a bit of shade, joining Prince Charles in the Royal Enclosure.

England may have beaten Australia by a point – and three streakers might have invaded the pitch – but the on-field action somehow seemed a tad irrelevant, as anyone who was anyone stayed within the safe confines of Cartier's enclosure. "It is," said one onlooker peering over the fence, "an excuse to stand around in a field and start drinking before midday. Like a Glastonbury for posh people."