King Willem-Alexander and Queen Maxima of The Netherlands with their daughters (from left to right) Crown Princess Amalia, Princess Alexia, and Princess Ariane.
The King and Queen of the Netherlands pose with their family during the annual summer photo call in Warmond, Netherlands.
King Abdullah II and Queen Rania of Jordan with their children, Crown Prince Hussein (far left), Princess Salma (right), and Prince Hashem. Not pictured: Princess Iman.
The Jordanian royal family celebrates the country's 70th Independence Day in May 2016. Princess Iman is missing from the photo, but she's becoming a style icon in her own right.
From left to right: Prince Gabriel, Queen Mathilde, Prince Emmanuel, King Philippe, Princess Elisabeth, Duchess of Brabant, and Princess Eléonore of Belgium.
The royal family of Belgium on a family ski trip to Switzerland in February 2016.
From left to right, starting from top row: Crown Prince Frederik, Prince Vincent, Prince Henrik, Princess Josephine, Prince Christian, Princess Isabella, Queen Margrethe II, and Crown Princess Mary of Denmark.
The Danish Royal Family at their annual summer photocall in Grasten, Denmark, July 2016.
Crown Prince Naruhito, Crown Princess Masako, their daughter Aiko, and their dog Yuri.
Japan's royal family poses with the family pet at their Togu Palace home in Tokyo.
King Norodom Sihamoni.
King Norodom Sihamoni, a bachelor, watches Cambodia's annual water festival celebrations in November 2016.
Prince Guillaume and Princess Stephanie of Luxembourg.
Prince Guillaume of Luxembourg holds an umbrella for his wife, Princess Stephanie, as they arrive at the celebration of King Harald and Queen Sonja of Norway's 80th birthdays in May.
King Felipe VI, Princess Sofia, Princess Leonor, and Queen Letizia of Spain.
Princess Sofia of Spain marks her First Communion at the Asuncion de Nuestra Senora Church in Madrid, Spain.
Crown Princess Victoria holding Prince Oscar, Duke of Skane, with her husband, Prince Daniel, Duke of Vastergotland, and daughter, Princess Estelle of Sweden.
Crown Princess Victoria of Sweden holds Prince Oscar after his Christening ceremony in May 2016.
King Bhumibol Adulyadej, center, and his family members (from left) Princess Somsavali, Princess Ubolratana, Princess Chulabhorn, Princess Siribhachudabhorn, Royal Consort Princess Srirasm, Prince Dipangkorn Rasmijoti, Crown Prince Vajiralongkorn, Princess Sirindhorn.
King Bhumibol Adulyadej sits on a balcony at Ananta Samakhom Throne Hall in December 2012 after addressing the crowd on his 85th birthday. He died in 2016 at the age of 88, triggering a year of mourning throughout Thailand.
From left to right: Camilla, Duchess of Cornwall, Prince Charles, Prince of Wales, Queen Elizabeth II, Prince Philip, Duke of Edinburgh, Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge.
Members of the royal family look out from the balcony of Buckingham Palace during the Trooping the 2017 Colour parade in London, England.
From left to right: Crown Princess Mette-Marit, Prince Sverre Magnus, Crown Prince Haakon, Princess Ingrid Alexandra, Marius Borg Hoiby, Princess Astrid, Queen Sonja, King Harald V, Emma Tallulah Behn, Princess Martha Louise, Leah Isadora Behn, and Maud Angelica Behn of Norway.
King Harald V and Queen Sonja of Norway and family attend a garden party during the Royal Silver Jubilee Tour in Trondheim, Norway.
From left to right: Pauline Ducruet, Camille Gottlieb, Princess Stephanie of Monaco and Louis Ducruet.
Princess Stephanie of Monaco and her children attend the Fight Aids Charity Gala in Monaco. Princess Stephanie is the youngest child of Rainier III, Prince of Monaco, and Grace Kelly.
From left to right: King Mswati III, Amakhosikati LaMatsebula, LaMotsa, LaNgangaza, LaHwalathe, and Zena Mahlangu.
Swaziland's King Mswati III, left, sits near four of his 15 wives at the country's international trade fair in Manzini, Swaziland.
Princess Laila Salma holding her son, Moulay Al Hassan, with King Mohammed VI.
King Mohammed VI and Princess Laila Salma welcomed their son, Moulay Al Hassan, in 2003.