COPENHAGEN, DENMARK - MAY 26: Queen Margrethe of Denmark, Crown Prince Frederik of Denmark and Crown Princess Mary of Denmark during the gala banquet on the occasion of The Crown Prince's 50th birthday at Christiansborg Palace Chapel on May 26, 2018 in Copenhagen, Denmark. (Photo by Patrick van Katwijk/Getty Images)
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Getty Images Entertainment Patrick van Katwijk

COPENHAGEN, DENMARK - MAY 26: Queen Margrethe of Denmark, Crown Prince Frederik of Denmark and Crown Princess Mary of Denmark during the gala banquet on the occasion of The Crown Prince's 50th birthday at Christiansborg Palace Chapel on May 26, 2018 in Copenhagen, Denmark. (Photo by Patrick van Katwijk/Getty Images)
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Getty Images Entertainment Patrick van Katwijk

COPENHAGEN, DENMARK - MAY 26: Queen Margrethe of Denmark, Crown Prince Frederik of Denmark and Crown Princess Mary of Denmark during the gala banquet on the occasion of The Crown Prince's 50th birthday at Christiansborg Palace Chapel on May 26, 2018 in Copenhagen, Denmark. (Photo by Patrick van Katwijk/Getty Images)
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Getty Images Entertainment Patrick van Katwijk

COPENHAGEN, DENMARK - MAY 26: Queen Margrethe of Denmark as host for the evening leads Crown Prince Frederik and Crown Princess Mary to the Knights hall where the gala banquet on the occasion of The Crown Prince's 50th birthday at Christiansborg Palace is held on May 26, 2018 in Copenhagen, Denmark. Some 350 guest participated in the event (Photo by Ole Jensen/Getty Images)
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Getty Images Entertainment Ole Jensen