COPENHAGEN, DENMARK- APRIL 16:   Queen Margrethe  II of Denmark celebrates her 76th Birthday with, ( l to r ) Crown Princess Mary of Denmark and Crown Prince Frederik of Denmark, Queen Margrethe II of Denmark, Prince Henrik of Denmark, Prince Joachim and Princess Marie of Denmark, at  Amalienborg Palace, on April 16, 2016, in Copenhagen, Denmark (Photo by Julian Parker/UK Press via Getty Images)