The controversial figure of Queen Christina of Sweden (1626-1689) has been the subject of a wide historical literature, particularlyin relation to her strong choices, such as the abdicationfrom the throne of Sweden and the conversion to RomanCatholicism. Certain historians wanted to identify the reasonsfor these choices in her sexual ambiguity - a presumed homosexuality- and congenital sexual anomalies, such as hermaphroditismand hyperandrogenism.The article analyses psychological and medical theories onthe Queen’s sexuality in the essays, published from the Nineteenthcentury up to now, integrating research with unpublishedarchival documentation - letters by court doctors, privatecorrespondence and the Queen’s autobiography. The aimof the article is to restore the truth about the Queen’s sexualorientation. The anthropological examination, carried out onthe Queen’s skeleton, confirms typical female features, just asthe analysis of the recently discovered archival documentationshows a heterosexual orientation. Christina had a masculineattitude more because of the male education she received, thevirile role she assumed as a sovereign, her proud nature asa lover of freedom, her adherence to libertine thought and,above all, the male language of power during the modern agerather than for presumed sexual anomalies.