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Lauren Ann Chapin (May 23, 1945 – February 24, 2026) was an American actress who played the role of the youngest child "Kathy Anderson" (nicknamed "Kitten") on the television show Father Knows Best[1] between 1954 and 1960. She appeared in 196 episodes of the 203 in the series. Chapin was awarded five Junior Emmys for Best Child Actress. Two of her older brothers were also child stars, Billy and Michael Chapin. #laurenchapin #fatherknowsbest