Sienna and Kate in cat-fight

News just in, folks, our Kate doesn't need Pete to cause chaos - she's just fine on her own, thank you very much. Miss Moss and Sienna Miller almost came to blows at a friend's wedding the other day, with Welsh actor and singer Rhys Ifans at the heart of the row.

Rhys used to be a partying pal of Kate, but arrived with Sienna at the wedding - something which didn't go down too well at all! According to an eyewitness, quoted in Britain's The Sun, Kate and Sienna sat smouldering at opposite sides of the dance floor. But in true celeb party spirit, it wasn't long before they gave each other a piece of their minds.

"Kate had a go at Sienna and accused her of stealing her style. She was ranting on about how Sienna was now trying to steal her lifestyle and her friends too. It was really cutting and everyone was listening to them.

"A few drinks had been sunk by the time Kate said it and Sienna had plucked up some Dutch courage too. She gave Kate as good as she got."

Designer handbags at dawn, ladies!