Spain's King Felipe and Queen Letizia, left, sit at the tribune during the celebrations of the 40th anniversary of the Spanish Constitution, inside parliament in Madrid, Spain, Thursday, Dec. 6, 2018. The Spanish government and royal family mark the 40th anniversary of the country's post-dictatorship constitution in a ceremony in parliament. (Zipi/Pool Photo via AP)

Spain's King Felipe and Queen Letizia sit in the tribune during the celebrations of the 40th anniversary of the Spanish Constitution, inside parliament in Madrid, Spain, Thursday, Dec. 6, 2018. The Spanish government and royal family mark the 40th anniversary of the country's post-dictatorship constitution in a ceremony in parliament. (Zipi/Pool Photo via AP)http://epix.ap.org/#

Spain's King Felipe and Queen Letizia sit in the tribune during the celebrations of the 40th anniversary of the Spanish Constitution, inside parliament in Madrid, Spain, Thursday, Dec. 6, 2018. The Spanish government and royal family mark the 40th anniversary of the country's post-dictatorship constitution in a ceremony in parliament. (Zipi/Pool Photo via AP)

Spain's King Felipe, standing, speaks from the tribune during the celebrations of the 40th anniversary of the Spanish Constitution, inside parliament in Madrid, Spain, Thursday, Dec. 6, 2018. The Spanish government and royal family mark the 40th anniversary of the country's post-dictatorship constitution in a ceremony in parliament. (Zipi/Pool Photo via AP)

Queen Letizia Ortiz attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish Emeritus King Juan Carlos I and Sofia de Grecia,Spain's Prime Minister Pedro Sanchez,Ana Pastor attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon next to Spanish Emeritus King Juan Carlos I and Sofia de Grecia,Spain's Prime Minister Pedro Sanchez,Ana Pastor attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon next to Spanish Emeritus King Juan Carlos I and Sofia de Grecia,Spain's Prime Minister Pedro Sanchez,Ana Pastor attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon next to Sofia de Grecia,Spain's Prime Minister Pedro Sanchez attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

King Juan Carlos, King Felipe, Queen Letizia, Queen Sofнa, Princess Leonor and Princess Sofia attend the celebration of the 40 anniversary of the constitution at the national congress on December 6, 2018 in Madrid, Spain. Photo by Archie Andrews/ABACAPRESS.COM

Spanish King Felipe VI with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Sofia de Grecia,Spain's Prime Minister Pedro Sanchez,Ana Pastor,Pio Garcia-Escudero attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz, Sofia de Grecia,Spain's Prime Minister Pedro Sanchez,Ana Pastor attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz, Sofia de Grecia,Spain's Prime Minister Pedro Sanchez,Ana Pastor attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Prime Minister Pedro Sanchez,Spain's Vice President and Equality Minister Carmen Calvo attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Politics Mariano Rajoy,Jose Lus Rodriguez Zapatero attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish Emeritus King Juan Carlos I and Sofia de Grecia attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Politics Mariano Rajoy.Jose Luis Rodriguez Zapatero,Jose Maria Aznar,Felipe Gonzalez attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Politics Alberto Garzon,Pablo Iglesias attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Politics Mariano Rajoy.Jose Luis Rodriguez Zapatero,Jose Maria Aznar attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Prime Minister Pedro Sanchez,Spain's Vice President and Equality Minister Carmen Calvo,Minister Josep Borrell,Politics Mariano Rajoy.Jose Luis Rodriguez Zapatero,Jose Maria Aznar,Felipe Gonzalez attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Politics Pablo Iglesias attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Princess of Asturias Leonor de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Spanish King Felipe VI and Queen Letizia Ortiz attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Princess of Asturias Leonor de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

06-12-2018 Madrid King Felipe and Queen Letizia and princess Leonor and princess Sofia leaving the commemorative act of the 40th anniversary of the Spanish constitution at the Parliament's Lower House in Madrid. . .

06-12-2018 Madrid King Felipe and Queen Letizia and princess Leonor and princess Sofia leaving the commemorative act of the 40th anniversary of the Spanish constitution at the Parliament's Lower House in Madrid. . .

06-12-2018 Madrid King Felipe and Queen Letizia and princess Leonor and princess Sofia leaving the commemorative act of the 40th anniversary of the Spanish constitution at the Parliament's Lower House in Madrid. . .

06-12-2018 Madrid King Felipe and Queen Letizia and princess Leonor and princess Sofia leaving the commemorative act of the 40th anniversary of the Spanish constitution at the Parliament's Lower House in Madrid. . .

06-12-2018 Madrid King Felipe and Queen Letizia and princess Leonor and princess Sofia leaving the commemorative act of the 40th anniversary of the Spanish constitution at the Parliament's Lower House in Madrid. . .

06-12-2018 Madrid King Felipe and Queen Letizia and princess Leonor and princess Sofia leaving the commemorative act of the 40th anniversary of the Spanish constitution at the Parliament's Lower House in Madrid. . .

06-12-2018 Madrid King Felipe and Queen Letizia and princess Leonor and princess Sofia leaving the commemorative act of the 40th anniversary of the Spanish constitution at the Parliament's Lower House in Madrid. . .

Spanish King Felipe VI and Queen Letizia Ortiz attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

Queen Letizia Ortiz with daughters Princess of Asturias Leonor de Borbon and Sofia de Borbon attending commemorative act of the 40 anniversary of Spanish Constitution in Madrid on Thursday , 06 December 2018

06-12-2018 Madrid King Felipe and Queen Letizia and princess Leonor and princess Sofia leaving the commemorative act of the 40th anniversary of the Spanish constitution at the Parliament's Lower House in Madrid. . .