On Saturday, Miller showed up at a wedding reception with Moss's old pal Rhys Ifans. The supermodel was also in attendance and she attacked Miller for co-opting her style.

Kate came to the party with her new boyfriend Jamie Hince and her friend Sadie Frost. Sadie was once married to Jude Law, Sienna's ex-fiancé. It's a wonder the two groups managed to stay civil as long as they did.

But after a while the tension got to be too much. Says one onlooker to the Sun, "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. 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."

Surprisingly enough, it was Sadie who managed to get the two stars to stop bickering. The snitch said, "Sadie stood between them and reminded them that it was a wedding and that they should show some respect. Sienna was in the mood for carrying on the scrap but Rhys persuaded her to call it a night."