see more

CALAIS, FRANCE - JUNE 15: Evening sheath dress in organza printed with blue and white stripes with matching scarf, worn by the Duchess of Windsor is displayed during the exhibition "Hubert de Givenchy" at "Cite de la Dentelle et de la Mode" on June 15, 2017 in Calais, France. This exhibition takes part from June 15 to December 31, 2017. (Photo by Thierry Chesnot/Getty Images)

CALAIS, FRANCE - JUNE 15:  Evening sheath dress in organza printed with blue and white stripes with matching scarf, worn by the Duchess of Windsor is displayed during the exhibition "Hubert de Givenchy" at "Cite de la Dentelle et de la Mode" on June 15, 2017 in Calais, France. This exhibition takes part from June 15 to December 31, 2017.  (Photo by Thierry Chesnot/Getty Images)

see more

CALAIS, FRANCE - JUNE 15: Wool mourning coat with leather belt worn by the Duchess of Windsor at the funeral of the Duke of Windsor is displayed during the exhibition "Hubert de Givenchy" at "Cite de la Dentelle et de la Mode" on June 15, 2017 in Calais, France. This exhibition takes part from June 15 to December 31, 2017. (Photo by Thierry Chesnot/Getty Images)

CALAIS, FRANCE - JUNE 15:  Wool mourning coat with leather belt worn by the Duchess of Windsor at the funeral of the Duke of Windsor is displayed during the exhibition "Hubert de Givenchy" at "Cite de la Dentelle et de la Mode" on June 15, 2017 in Calais, France. This exhibition takes part from June 15 to December 31, 2017.  (Photo by Thierry Chesnot/Getty Images)

see more

DENVER, CO - NOVEMBER 13: This Cartier necklace was worn by the Duchess of Windsor and is part of the Denver Art Museum's newest exhibition "Brilliant: Cartier in the 20th Century" on Thursday, November 13, 2014. The show opens November 16th and features stunning jewelry, timepieces, and precious objects created between 1900 and 1975. (Photo by Cyrus McCrimmon/The Denver Post via Getty Images)

DENVER, CO - NOVEMBER 13:   This Cartier necklace was worn by the Duchess of Windsor and is part of the Denver Art Museum's newest exhibition "Brilliant: Cartier in the 20th Century" on Thursday, November 13, 2014. The show opens November 16th and features stunning jewelry, timepieces, and precious objects created between 1900 and 1975. (Photo by Cyrus McCrimmon/The Denver Post via Getty Images)

see more

Le Duc et la Duchesse de Windsor dans les années 60 au Royaume-Uni. Circa 1960. (Photo by GARCIA/Gamma-Rapho via Getty Images)

Le Duc et la Duchesse de Windsor dans les années 60 au Royaume-Uni. Circa 1960. (Photo by GARCIA/Gamma-Rapho via Getty Images)

see more

The Duke and Duchess of Windsor seated outdoors with two small dogs.

The Duke and Duchess of Windsor seated outdoors with two small dogs.