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. During the 1960s, Radziwill attempted a career as an actress. Her acting attempt was unsuccessful, if highly publicized. She featured in the 1967 production of
The Philadelphia Story as the spoiled
Main Line heiress Tracy Lord. The play was staged at the Ivanhoe Theatre in Chicago, and Radziwill's performance was much criticized. A year later, she appeared in a television adaptation of the 1944 movie
Laura, which was also criticized. A London townhouse and a manor house in Buckinghamshire,
Turville Grange (which she owned and shared with her second husband), had both been decorated by Italian stage designer
Lorenzo Mongiardino and were greatly admired and frequently photographed by
Cecil Beaton and
Horst P. Horst. She worked briefly as an interior decorator in a style influenced by her association with Mongiardino. Her clientele were wealthy; she once decorated a house "for people who would not be there more than three days a year". She frequented celebrity company, including travelling with
The Rolling Stones during
their 1972 tour of North America, which she attended alongside the writer
Truman Capote. Radziwill was named to the
Vanity Fair International Best Dressed Hall of Fame in 1996. Her
Paris (49, Avenue Montaigne) and
Manhattan (160 East 72nd Street) apartments were featured in the April 2009 issue of
Elle Décor magazine. She was interviewed by director
Sofia Coppola in February 2013 about her life as part of Radziwill's cover story for
T: The New York Times Style Magazine as well as about Coppola's movie
The Bling Ring and the loss of privacy. She was listed as one of the 50 best-dressed people older than age 50 by
The Guardian in March 2013. ==Family==