Daphne Guinness isn’t just a work of living performance art, she’s also a fashion conservationist. The muse, artist, heiress and patron famously bought the complete collection of her late friend, the equally eccentric Isabella Blow, in 2011 in order to keep the museum-worthy collection together in one piece. Now, following an exhibit of her personal dress collection at FIT, Guinness is putting 100 pieces from her wardrobe on the block to raise money for the Isabella Blow Foundation, a charity she’s set up to sponsor emerging talent in avant-garde fashion, a cause Blow also championed.

The auction will take place at Christie’s in London on June 27, and promises to include custom pieces by the likes of Chanel, Balenciaga and Alexander McQueen, friend to both Blow and Guinness. But if you don’t have the bank account to shop the sale—or the figure to fit into Guinness’s teeny tiny size—swing by the auction house for a once-in-a-lifetime preview. The Daphne Guinness Collection; Sold to Benefit the Isabella Blow Foundation will remain in view from June 23-27 at Christie’s South Kensington, 85 Old Brompton Road, London.