Daughter of the renowned Hart to Hart acting professional, she became an celebrity and popular tv sponsor in her own ideal. She was called after celebrity Katherine Hepburn. After interviewing superstars for an ABC unique, she got the format to Movietime Wire Network and finally to HBO and Cinemax. She wedded her longtime partner, Leif Lewis, in 2007. Her dad was acting professional Robert Wagner, and her mom, Marion Marshall, was an celebrity who made an appearance on many Television guest roles.