Kate MossKate Moss has reportedly threatened Sienna Miller over Sienna’s relationship with Rhys Ifans.

The fashionista pair are said to have had words at Kate’s best friend Davinia Taylor’s 30th birthday party over the weekend, with an onlooker reporting the protective supermodel told Sienna: “If you hurt Rhys, you’ll have made an enemy for life.”

“Treat him right and we’ll leave you alone. But don’t hurt him because we love him - and we always stick together.”

Kate has previously accused the Factory Girl star of stealing Rhys away from her as a friend and stealing her style but the source added that Sienna wasn’t expecting the comments at the rave-themed party at The Colour Rooms in East London on Saturday night: “Sienna was gobsmacked by what Kate had said. She turned on her heel and took to the dance floor. She just couldn’t believe it.”

Sienna and Rhys have been rumoured to have been dating since the summer but until they were spotted kissing recently, insisted they were just friends. Kate has known renowned party-goer Rhys for a number of years through her Primrose Hill set of friends including Sadie Frost and Jude Law.