Worldwide Guide to Women in Leadership
The Federation of Saint Christopher [Kitts] and Nevis (Female Suffrage 1951) Part of the British Colony of Leeward and Windward Islands 1623-1967, when it became a state in association with United Kingdom before achieving independence in 1983

Also see  Saint Christopher and Nevis Ministers

1983- Elizabeth the Second, by the Grace of God, Queen of Saint Christopher and Nevis and of Her Other Realms and Territories, Head of the Commonwealth (19.09-)
Queen of the United Kingdom of Great Britain and Northern Ireland since 1952.