Supermodel Kate Moss and actress Sienna Miller have finally buried the hatchet, with a little help from their hairdresser.

The pair seemed to have put their differences aside as they attended a charity event with James Brown, who looks after the tresses of both women, in London yesterday.

They joined forces to support Brown who is selling off the clothes and accessories of his famous friends to raise money for Cancer Research UK.

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Burying the hatchet: Sienna Miller and Kate Moss with hairdesser and friend James Brown

United front: Sienna and Kate with James, who is selling off the clothes and accessories of his famous friends to raise money for Cancer Research

The relationship between the two women reportedly became frosty when Miller began dating Jude Law soon after he split with wife Sadie Frost - Moss's best friend.

But they fell out spectacularly last summer when Miller took up with actor Rhys Ifans - who is also a close friend of Moss's - and started spending time with the notorious Primrose Hill set.

The pair then had a very public argument at the wedding reception of mutual friends Rose Ferguson and Jake Chapman. Moss is said to have accused Miller of stealing her style and her friends.

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All smiles: Kate with pal Kelly Osbourne. The pair enjoyed a wild night out at Punk nightclub on Thursday

An onlooker told 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.

"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."

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Source of tension: Sienna with boyfriend Rhys Ifans earlier this week. Moss has reportedly been unhappy about their relationship

They also had a showdown at former soap star Davinia Taylor's 30th Birthday party where Moss - who has been dating The Kills frontman Jamie Hince since her split from Pete Doherty last June - reportedly told the 25-year-old actress that she would have "an enemy for life" if she hurt Ifans.

A source said: "Sienna was shocked by what Kate had said. She turned on her heel and took to the dancefloor. She just couldn't believe it."

But the pair put on a united front at the auction at The Marylebone High Street Cancer Shop in London indicating that the war is over - for now.