Katarina was born at King’s College Hospital in London[1] to Princess Margarita of Baden and Prince Tomislav of Yugoslavia.

[2] Her father's dynasty having been deposed and banished from Yugoslavia after World War II, she grew up in exile, largely in England.

[3] Her grandmother, Princess Theodora, Margravine of Baden, was the sister of Prince Philip, Duke of Edinburgh, late husband of Queen Elizabeth II.

[4] As of 2013[update], Katarina and former Royal butler Grant Harrold develop and sell etiquette and decorum classes.

[2] In 2009, Katarina supported the charity Project Change: Bermuda to raise funds towards building a hospital and training medical staff in Burundi.