AARHUS, DENMARK - APRIL 16: Queen Margrethe of Denmark waves during her 77th birthday celebrations at Marselisborg Palace on April 16, 2017 in Aarhus, Denmark. (Photo by Patrick van Katwijk/Getty Images)
AARHUS, DENMARK - APRIL 16: Crown Prince Frederik, and Crown Princess Mary of Denmark, with Princess Isabella, and Prince Christian of Denmark at Queen Margrethe of Denmark's 77th Birthday celebrations, at Marselisborg Palace on April 16, 2017 in Aarhus, Denmark. (Photo by Julian Parker/UK Press via Getty Images)
AARHUS, DENMARK - APRIL 16: Prince Joachim, Princess Marie, Princess Isabella, Princess Athena and Prince Henrik attend the 77th birthday celebrations of Danish Queen Margrethe at Marselisborg Palace on April 16, 2017 in Aarhus, Denmark. (Photo by Patrick van Katwijk/Getty Images)
