Images of timeless glamour by photographers such as Helmut Newton, Mario Testino and Rankin are to be auctioned to raise funds for a homeless charity supported by Prince William.
The Prince himself will be attending a reception to launch the sale on Thursday for A Positive View, of which he is a patron.
The shots - vintage and contemporary - include pictures of stars such as actress Audrey Hepburn and model Kate Moss.
Other artists and photographers whose work will be sold at the auction at Christie's in London include Henri Cartier Bresson, Terence Donovan, Wim Wenders and Patrick Demarchelier.
William will also see one of his own photographs sold in the auction. Together with a previously homeless man, Jeff Hubbard, the Prince created the Crisis Royal Diptych which features an image of each of them taken by the other.
All proceeds of the exhibition will go to Crisis, the UK's leading homeless charity for single people.