WASHINGTON, DC - SEPTEMBER 28: HRH Crown Princess Mary of Denmark speak during a visit to Children's National Medical Center on September 28, 2016 in Washington, DC.  (Photo by Riccardo S. Savi/Getty Images)
WASHINGTON, DC - SEPTEMBER 28: HRH Crown Princess Mary of Denmark speak during a visit to Children's National Medical Center on September 28, 2016 in Washington, DC.  (Photo by Riccardo S. Savi/Getty Images)
WASHINGTON, DC - SEPTEMBER 28: HRH Crown Princess Mary of Denmark speaks during a visit to Children's National Medical Center on September 28, 2016 in Washington, DC.  (Photo by Riccardo S. Savi/Getty Images)
WASHINGTON, DC - SEPTEMBER 28:  HRH Crown Prince Frederik of Denmark and Crown Princess Mary of Denmark visit the U.S. Chamber of Commerce on September 28, 2016 in Washington, DC.  (Photo by Riccardo S. Savi/Getty Images)
WASHINGTON, DC - SEPTEMBER 28: HRH Crown Princess Mary of Denmark alongside hospital President Kurt Newman waves to a TV monitor during a visit to Children's National Medical Center on September 28, 2016 in Washington, DC.  (Photo by Riccardo S. Savi/Getty Images)