MUNICH, GERMANY - MAY 20: Crown Prince Frederik and Crown Princess Mary of Denmark during the ECCO store opening on May 20, 2015 in Munich, Germany.  (Photo by Franziska Krug/Getty Images for ECCO)
TORONTO, ON - SEPTEMBER 19:  Crown Princess Mary Of Denmark attends official visit to Canada - Day 3 at The Hudson's Bay on September 19, 2014 in Toronto, Canada.  (Photo by George Pimentel/Getty Images)
COPENHAGEN, DENMARK - AUGUST 13:  Crown Prince Frederik, and Crown Princess Mary of Denmark, with their daughter Princess Isabella depart Amalienborg Palace for Princess Isabella's first day at Tranegard School on August 13, 2013 in Copenhagen, Denmark.  (Photo by Julian Parker/UK Press via Getty Images)
Crown Princess Mary Of Denmark On A Six Day Official Visit To The Usa, Visits Grand View University , In Des Moines, Iowa. (Photo by Julian Parker/UK Press via Getty Images)