The eldest child of Felipe and Letizia and heir-apparent to the Spanish throne. On October 31, 2003—her 18th birthday—the Crown Princess took a public oath to her country. She promised, “to faithfully carry out my duties, to keep and uphold the constitution and the laws, and respect the rights of citizens and the autonomous communities and loyalty to the king.”
Currently, she is enrolled in Spain’s General Military Academy of Zaragoza. Cameras extensively covered the first day of her three-year military training, with many praising her mature decision to actively prepare for becoming Spain’s head of state. It’s said that after the military academy, she will go on to study law.)
According to the website El Español, King Felipe’s eldest daughter—and the heir apparent to the Spanish throne—is the most popular member of the royal family (even more so than her father).
Infanta Sofía
Princess Sofia in 2023.Photo: Getty Images
Infanta Sofía is the title given to the daughter of the ruling monarch who is not the heir, similar to how “Princess Royal” is used in the United Kingdom. Currently, the 17-year-old is studying at the international baccalaureate school UWC Atlantic in Wales, England. She is expected to enroll in university next fall.
King Juan Carlos I
King Juan Carlos of Spain in 2009.Photo: Getty Images