Pop star-turned-fashion designer Victoria Beckham is to donate items of her clothing to raise money for cancer victims.

The British fashionista—along with other high-profile stars, including Stella McCartney, Sienna Miller and Elizabeth Hurley—hopes to raise funds for the Royal Marsden Cancer Campaign by giving a selection of one-off pieces of her wardrobe to a new eBay initiative.

Celebrity Boutique will allow fashion fans to purchase unique items of clothing that once belonged to stars, and many of which were worn to public events. The former Spice Girl is to give away a piece from her own fashion collection, which she wore to a family meal at London’s exclusive Claridge’s hotel following her first ever in-store showcase at Selfridges department store.

UK Vogue editor Alexandra Shulman is another of the great and good of the fashion world who has got involved in the initiative: “As a trustee of The Royal Marsden Cancer Campaign, I am delighted to help with the Celebrity Boutique. The work of the campaign is vitally important in furthering both research and treatment of cancer and it’s terrific to have been able to use fashion as part of this.”