On this trip, Alexander met his first wife Maria Pia of Savoy, a daughter of Umberto II of Italy and Marie-José of Belgium.

On 21 January 1961, Princess Elizabeth married firstly Howard Oxenberg (1919–2010), an American Jewish dress manufacturer and close friend of the Kennedy family.

[12] Elizabeth recognized early the dangerous signs that would turn the former Yugoslavia upside down in a bloodbath of historic religious and ethnic rivalries long suppressed by Communist rule.

[13] In December 1990,[14] she created the Princess Elizabeth Foundation, a non-political, not-for-profit organization after foreseeing the crucial importance of a vehicle to address the tension brewing just below the surface.

[15] Before the breakup of Yugoslavia began in 1991, she invited the Orthodox Bishop Sava and the Mufti of Belgrade, along with the Yugoslav Minister for Religious Affairs to attend a conference in Moscow that was hosted by Mikhail Gorbachev.

[citation needed] This was the second international gathering of political and religious leaders committed to world reform that included Mother Teresa, the Archbishop of Canterbury, the Dalai Lama, Al Gore and Carl Sagan:[13] I do not understand how people can feel superior to those of another faith or race.

She decided to run for President of Serbia in the 2004 Serbian presidential election, despite her cousin Alexander's having objected that the Royal Family should stay out of politics.

After the death of King Alexander I, and during the Regency administration (of Regent Prince Paul, Radenko Stanković, and Ivo Perović) that followed, the City of Belgrade District Court issued Decree N° 0.428/34 on 27 October 1938.

On 2 August 1947, Edvard Kardelj, then vice-president of the Socialist Federal Republic of Yugoslavia, issued a decree that confiscated all these properties from the Karadjordjević family.