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MADRID, SPAIN - MAY 26: Queen Letizia inaugurate Books Fair 2017 on May 26, 2017 in Madrid, Spain. (Photo by Samuel de Roman/WireImage)

MADRID, SPAIN - MAY 26: Queen Letizia inaugurate Books Fair 2017 on May 26, 2017 in Madrid, Spain. (Photo by Samuel de Roman/WireImage)

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MADRID, SPAIN - MAY 26: Queen Letizia inaugurate Books Fair 2017 on May 26, 2017 in Madrid, Spain. (Photo by Samuel de Roman/WireImage)

MADRID, SPAIN - MAY 26: Queen Letizia inaugurate Books Fair 2017 on May 26, 2017 in Madrid, Spain. (Photo by Samuel de Roman/WireImage)

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MADRID, SPAIN - MAY 26: Queen Letizia of Spain and King Felipe of Spain host an Official Lunch For Marcelo Rebelo De Sousa at Zarzuela Palace on May 26, 2017 in Madrid, Spain. (Photo by Samuel de Roman/WireImage)

MADRID, SPAIN - MAY 26: Queen Letizia of Spain and King Felipe of Spain host an Official Lunch For Marcelo Rebelo De Sousa at Zarzuela Palace on May 26, 2017 in Madrid, Spain. (Photo by Samuel de Roman/WireImage)

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Queen Letizia, Portuguese President Marcelo Rebelo de Sousa and King Felipe VI of Spain inaugurate Books Fair 2017 on May 26, 2017 in Madrid, Spain. (Photo by Oscar Gonzalez/NurPhoto via Getty Images)

Queen Letizia, Portuguese President Marcelo Rebelo de Sousa and King Felipe VI of Spain inaugurate Books Fair 2017 on May 26, 2017 in Madrid, Spain.
 (Photo by Oscar Gonzalez/NurPhoto via Getty Images)

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MADRID, SPAIN - MAY 26: Queen Letizia of Spain attends the opening of the 2017 Book Fair at the Parque del Retiro on May 26, 2017 in Madrid, Spain. (Photo by Europa Press/Europa Press via Getty Images)

MADRID, SPAIN - MAY 26:  Queen Letizia of Spain  attends the opening of the 2017 Book Fair at the Parque del Retiro on May 26, 2017 in Madrid, Spain.  (Photo by Europa Press/Europa Press via Getty Images)