Stella McCartney wears a diamond wave tiara, made for the heiress Lily Vanderbilt Sloane, as a hair ornament at the Costume Institute Gala at the Metropolitan Museum of Art in New York, 2 May 2011; the tiara, made by Cartier around the time of Lily’s 1902 wedding to William Osgood Field, is now once again part of the Cartier Collection