Considered by "New York's society arbiters and editors" as the city's leading debutante, Radziwill had her "coming out" party in 1950.

A full-page photograph of her in her gown was featured in the "debutante" section of Life magazine (page 71) in the December 25, 1950 issue.

[7] She frequented celebrity company, including travelling with The Rolling Stones during their 1972 tour of North America,[8] which she attended alongside the writer Truman Capote.

[10][11] Her Paris (49, Avenue Montaigne)[12] and Manhattan (160 East 72nd Street)[13] apartments were featured in the April 2009 issue of Elle Décor magazine.

The Beales lived in a rambling, decaying home in East Hampton, New York, and were funded by other members of the family.

The film was adapted as a 2006 musical of the same name, where the characters Lee and Jackie Bouvier appear as visiting children in retrospect.

Dudley's second wife was Viscountess (Frances) Laura Long née Charteris who later married Michael Temple Canfield, Lee's first husband) and received a Roman Catholic annulment of his first marriage to re-marry.

[25] In 1976, The New York Times reported Peter Francis Tufo, a lawyer and real estate developer, was a "frequent escort" of Radziwill.

[26] On September 23, 1988, Radziwill married for a third time, becoming the second wife of American movie director and choreographer Herbert Ross.