Stories vary about how Ivana and Donald met, but they are thought to have first encountered each other in 1976 when she was on a modelling assignment.
The job was promoting the Montreal Olympic Games in New York and, according to reports, Ivana and a group of models were waiting in a glamorous, overcrowded bar called Maxwell's Plum.
Ivana, then aged 26, recalled that Donald, 29, impressed her by helping her and her friends get a table straight away.
Trump was already a wealthy man by this point, having inherited a $20 million (£16.6m) real estate business from his father Fred, and Ivana was smitten by his charms.
After a whirlwind nine-month courtship, Ivana said "I do" to "The Donald" (as she dubbed him).
The couple went on to have three children together: Donald Jr. in 1977, daughter Ivanka in 1981, and second son Eric in 1984. In 1998, Ivana became a naturalised US citizen.