This biography tells the story of Infanta Sofia of Spain, the youngest daughter of King Felipe VI and Queen Letizia of Spain. It chronicles her life from her birth in 2007 to the present day, including her childhood, education, and public engagements.
From Wikipedia
Infanta Sofía of Spain is a member of the Spanish royal family. She is the younger daughter of King Felipe VI and Queen Letizia and, as such, is second in the line of succession to the Spanish throne behind her sister, Leonor, Princess of Asturias.