WASHINGTON, DC - SEPTEMBER 28: HRH Crown Prince Frederik and HRH Princess Mary of Denmark, arrive at the Smithsonian's Arts and Industry building for a Gala Ball, to celebrate the U.S. Denmark Trade Mission on September 28, 2016 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
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Getty Images Entertainment Riccardo S. Savi

WASHINGTON, DC - SEPTEMBER 28: HRH Crown Prince Frederik and HRH Princess Mary of Denmark, arrive at the Smithsonian's Arts and Industry building for a Gala Ball, to celebrate the U.S. Denmark Trade Mission on September 28, 2016 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
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Getty Images Entertainment Riccardo S. Savi

WASHINGTON, DC - SEPTEMBER 28: HRH Crown Prince Frederik and HRH Princess Mary of Denmark, arrive at the Smithsonian's Arts and Industry building for a Gala Ball, to celebrate the U.S. Denmark Trade Mission on September 28, 2016 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
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Getty Images Entertainment Riccardo S. Savi

WASHINGTON, DC - SEPTEMBER 28: HRH Crown Prince Frederik and HRH Princess Mary of Denmark, speak to 4 years old Dagmar Moelier at the Smithsonian's Arts and Industry building for a Gala Ball, to celebrate the U.S. Denmark Trade Mission on September 28, 2016 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
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Getty Images Entertainment Riccardo S. Savi

WASHINGTON, DC - SEPTEMBER 28: HRH Crown Prince Frederik and HRH Princess Mary of Denmark, arrive at the Smithsonian's Arts and Industry building for a Gala Ball, to celebrate the U.S. Denmark Trade Mission on September 28, 2016 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Getty Images

Getty Images Entertainment Riccardo S. Savi