Kate Moss and Sienna Miller are reported to have had another bust-up over the weekend.

The Mirror claims that the supermodel gave Ms Miller a piece of her mind at pal Davinia Taylor's 30th birthday party.

She was overheard telling the STARDUST actress to treat new boyfriend, Welsh actor Rhys Ifans, right saying: "If you hurt Rhy 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."

The two fashion icons have previously had a volatile relationship, initially falling out over Ms Miller dating Jude Law - Kate's good friend SADIE FROSTS ex.

But according to the newspaper the actress's spokesperson has insisted there is no problem between the girls.

Sienna and Rhys arrived at the ex-HOLLYOAKS star's 90s rave themed party, at east London hangout The Colour Rooms, together.

Other guests included Kelly Osbourne, Sadie Frost and Naomi Campbell.

20/11/2007 10:36:49