Victoria Beckham is partnering with fashion website, TheOutnet.com, to auction off some of her most iconic outfits in a bid to raise money for mothers2mothers, a charity based in Cape Town that helps women living with HIV.

The former Spice Girl will be auctioning off 600 items of her clothing in aid of the charity on TheOutnet.com from August 20-25th, with the support of Christie’s who valued the items.

Victoria headed out to South Africa to visit the charity following an invitation from US Vogue editor Anna Wintour, and met with the found of mothers2mothers, Dr. Mitch Besser.

The charity employs and trains mentor mothers who are living with HIV and helps them understand how to prevent transmission and further spreading of the disease.

The 40-year-old fashion designer was so moved by the experience that she wanted to do all she could to raise money and awareness.

She said: "After spending just a few days with these remarkable women and learning more about the charity from Mitch, and his lovely wife Annie Lennox, I wanted to do as much as I could. It really was a life-changing experience; I’ve never experienced anything like it."

Victoria Beckham set to sell off 600 iconic outfits in online auction