COPENHAGEN, DENMARK - APRIL 15: Crown Princess Mary of Denmark and Crown Prince Frederik of Denmark attend a Gala Dinner at Christiansborg Palace on the eve of the 75th Birthday of Queen Margrethe of Denmark on April 15, 2015 in Copenhagen, Denmark. (Photo by Julian Parker/Mark Cuthbert/UK Press via Getty Images)
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UK Press Julian Parker/Mark Cuthbert

COPENHAGEN, DENMARK - APRIL 15: Crown Princess Mary of Denmark attends a gala dinner at Christiansborg Palace on the eve of the 75th Birthday of Queen Margrethe II of Denmark on April 15, 2015 in Copenhagen, Denmark. (Photo by Julian Parker/Mark Cuthbert/UK Press via Getty Images)
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UK Press Julian Parker/Mark Cuthbert

COPENHAGEN, DENMARK - APRIL 15: Crown Princess Mary of Denmark attends a gala dinner at Christiansborg Palace on the eve of the 75th Birthday of Queen Margrethe II of Denmark on April 15, 2015 in Copenhagen, Denmark. (Photo by Julian Parker/Mark Cuthbert/UK Press via Getty Images)
Getty Images

UK Press Julian Parker/Mark Cuthbert

COPENHAGEN, DENMARK - APRIL 15: Crown Princess Mary of Denmark attends a gala dinner at Christiansborg Palace on the eve of the 75th Birthday of Queen Margrethe II of Denmark on April 15, 2015 in Copenhagen, Denmark. (Photo by Julian Parker/Mark Cuthbert/UK Press via Getty Images)
Getty Images

UK Press Julian Parker/Mark Cuthbert

COPENHAGEN, DENMARK - APRIL 15: Crown Princess Mary of Denmark attends a gala dinner at Christiansborg Palace on the eve of the 75th Birthday of Queen Margrethe II of Denmark on April 15, 2015 in Copenhagen, Denmark. (Photo by Julian Parker/Mark Cuthbert/UK Press via Getty Images)
Getty Images

UK Press Julian Parker/Mark Cuthbert