MADRID, SPAIN - NOVEMBER 07: Crown Prince Felipe of Spain, and his wife Princess Letizia and new baby daughter Leonor leave the Ruber International clinic on November 7, 2005 in Madrid, Spain. Princess Letizia gave birth to the Infanta Leonor several weeks early by Caesarean section on October 31, 2005. (Photo by Carlos Alvarez/Getty Images)
MADRID, SPAIN - JANUARY 14: Spanish Royals Princess Letizia, Princess Leonor, Queen Sofia and King Juan Carlos attend the Christening of the daughter of Prince Felipe and Princess Letizia of Spain, Princess Leonor, at the Royal Palace on January 14, 2006 in Madrid, Spain. Princess Letizia gave birth to Leonor, her first child, several weeks early by Caesarean section at the Ruber International clinic on October 31, 2005. (Photo by Angel Diaz-POOL/Getty Images)
PALMA DE MALLORCA, SPAIN - APRIL 12: Princess Letizia of Spain and daughters Princess Leonor (C) and Princess Sofia (R) leave Palma de Mallorca Cathedral after Easter Sunday Mass on April 12, 2009 in Palma de Mallorca, Spain. (Photo by Carlos Alvarez/Getty Images)
Spanish Crown Prince Felipe (L) and Princess Letizia (R) pose with their daughters, Leonor (L) and Sofia in Soller on the island of Mallorca on August 6, 2012. The Royal Family spends its traditional summer holidays at the Marivent Palace on the island. AFP PHOTO/ Jaime REINA (Photo credit should read JAIME REINA/AFP/Getty Images)
(L to R) Spain's Queen Letizia, Spain's princess Sofia, and princess Leonor watch troops march during the Spanish National Day military parade in Madrid on October 12, 2016. / AFP / JAVIER SORIANO (Photo credit should read JAVIER SORIANO/AFP/Getty Images)
