Question: What star of The Children's Hour  was inducted into the International Best Dressed List Hall of Fame?

Context articles: The Children's Hour (film)
Jane Engelhard
Guy de Rothschild
Amanda Harlech
C. Z. Guest
Giancarlo Giammetti
Aimée de Heeren
Mona von Bismarck
Marella Agnelli
Audrey Hepburn

The Children's Hour (released as The Loudest Whisper in the United Kingdom) is a 1961 American drama film directed by William Wyler.
 The screenplay by John Michael Hayes is based on the 1934 play of the same title by Lillian Hellman.
 The film stars Audrey Hepburn, Shirley MacLaine, and James Garner.
Jane Engelhard (August 12, 1917 – February 29, 2004), born Marie Antoinette Jeanne Reiss, was an American philanthropist, best known for her marriage to billionaire industrialist Charles W. Engelhard Jr., as well as her donation of an elaborate 18th-century Neapolitan crêche to the White House in 1967.
 She was named to the International Best Dressed List Hall of Fame in 1972.
Baron Guy Édouard Alphonse Paul de Rothschild (] ; 21 May 1909 – 12 June 2007) was a French banker and member of the Rothschild family.
 He owned the bank Rothschild Frères from 1967 to 1979, when it was nationalized by the French government, and maintained possessions in other French and foreign companies including Imerys.
 He was named to the International Best Dressed List Hall of Fame in 1985.
Amanda Harlech (born Amanda Jane Grieve) is a British creative consultant and writer with a long association with the couturiers John Galliano and Karl Lagerfeld.
 She was named to the International Best Dressed List Hall of Fame in 1997.
Lucy Douglas "C. Z." Guest ("née" Cochrane; February 19, 1920 - November 8, 2003) was an American stage actress, author, columnist, horsewoman, fashion designer, and socialite who achieved a degree of fame as a fashion icon.
 She was frequently seen wearing elegant designs by famous designers like Mainbocher.
 Her unfussy, clean-cut style was seen as typically American, and she was named to the International Best Dressed List Hall of Fame in 1959.
Giancarlo Giammetti (born 5 February 1945 in Rome) is an Italian businessman, mostly known for his professional and personal association with Valentino Garavani.
 In 2006 he was inducted in the International Best Dressed List Hall of Fame.
Aimée de Heeren, born Aimée Soto-Maior de Sá or Aimée de Sotomayor (3 August 1903 – 13 September 2006) was a Brazilian socialite.
 She was named to the International Best Dressed List Hall of Fame in 1996.
Mona von Bismarck (February 5, 1897 – July 10, 1983), known as Mona Bismarck, was an American socialite, fashion icon, and famed beauty.
 Her five husbands included Harrison Williams, said to be the richest man in America, and the Graf von Bismarck-Schönhausen, grandson of German Chancellor Otto von Bismarck.
 Mona was the first American to be named "The Best Dressed Woman in the World" by a panel of top couturiers including Chanel, and was also named to the International Best Dressed List Hall of Fame.
Marella Agnelli, born Donna Marella Caracciolo di Castagneto (born 4 May 1927) is an Italian noblewoman, art collector, socialite, style icon and widow of former Fiat chairman Gianni Agnelli.
 She has often appeared in the fashion magazine "Vogue."
 She was named to the International Best Dressed List Hall of Fame in 1963.
Audrey Hepburn ( ; born Audrey Kathleen Ruston; May 4, 1929January 20, 1993) was a British actress, model, dancer and humanitarian.
 Recognized as a film and fashion icon, Hepburn was active during Hollywood's Golden Age.
 She was ranked by the American Film Institute as the third-greatest female screen legend in Golden Age Hollywood and was inducted into the International Best Dressed List Hall of Fame.