A dress specially designed for Kate Winslet has been bought at auction by a mystery bidder for £20,000.

The occasion launched Ms. Winslet’s role as ambassador of Cardboard Citizens, the UK’s only homeless people’s professional theater company.

And the Vivienne Westwood creation, described as a “beautifully flowing deep red number”, was sold just one day after the designer showed her collection for the first time in ten years.

The actress auctioned her outfit at the end of a charity evening at The Mandarin Oriental Hotel in London’s Knightsbridge.

According to organizers, she quickly changed into an “ultra-chic all-black ensemble” following the winning bid.

The Westwood dress was then packaged up for the mystery bidder to take away.

The actress said: “I am delighted that the proceeds from the auction of the dress will make such a useful contribution to the wonderful work of Cardboard Citizens with homeless people in London.”

She added: “Vivienne Westwood created the dress especially for me for this occasion and it is a really beautiful piece.

“I hope that the winning bidder enjoys wearing it as much as I did.”

The Homeless People’s Theater Charity Dinner held on Friday raised a total of £150,000.

Source: The Press Association