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Just like her sisters, Hilton acted when she was younger, appearing in series like The Nanny and the Professor, Bewitched, and Happy Days. In 1979, she married businessman Richard Hilton, whose grandfather Conrad Hilton founded the Hilton Hotel chain. They have four children: Paris Hilton, Nicky Hilton, Barron Hilton, and Conrad Hilton.
— Bravo (@BravoTV) October 27, 2020
Kathy Hilton has made cameos on RHOBH before, as well as other screen projects with her family, like The Simple Life, The World According to Paris, and the new documentary This Is Paris.
Her casting comes a day after Crystal Kung Minkoff was added to the new season as the show's first-ever Asian American housewife. Season 11 will not see the return of Denise Richards or Teddi Mellencamp Arroyave.