Letizia Ortiz Rocasolano, Princess of Asturias:
Letizia Ortiz Rocasolano, Princess of Asturias, 41, is the wife of Felipe, Prince of Asturias, the heir apparent to the throne of Spain.
On 2 June 2014, King Juan Carlos I announced that he would abdicate in favor of her husband Felipe at some point later in the year.
Two days later, it was announced that Felipe would be proclaimed king on 18 June. On that date, Letizia will become queen consort.
Frederik, Crown Prince of Denmark:
46 years old, Frederik André Henrik Christian is the heir apparent to the throne of Denmark.
Princess Charlotte Marie Pomeline Casiraghi of Monaco:
Princess Charlotte is 27 years old and is fifth in line for the throne.
Prince Amedeo of Belgium, Archduke of Austria-Este:
Heir to the headship of the House of Austria-Este, which is a cadet branch of the House of Habsburg-Lorraine, Prince Amedeo, 28, is sixth in line to the throne of Belgium.
Princess Madeleine, Duchess of Hälsingland and Gästrikland:
31-year-old Princess Madeleine of Sweden, Duchess of Hälsingland and Gästrikland is fourth in line of succession.
Prince Félix Léopold Marie Guillaume of Luxembourg:
Prince Félix Léopold Marie Guillaume of Luxembourg, 30, is the second son Grand Duke Henri and Grand Duchess Maria Teresa. He is currently second in the line of succession.
Hamdan bin Mohammed Al Maktoum:
31-year-old Hamdan bin Mohammed Al Maktoum is the Crown Prince of Dubai. He is also a poet.