She landed the part of Bonnie Blue Butler in Gone With the Wind at the age of four, after casting directors had tested 250 applicants for the role, including her seven-year-old sister Diane.

[3] King studied at Marymount High School[1] and went on to attend the University of Southern California, graduating in 1956 with a bachelor's degree in communications.

[3] In the early 2000s, King made a guest appearance as a contestant on the TV game show To Tell the Truth, hosted by John O'Hurley.

[3] In 2009, she privately published a small book, Bonnie Blue Butler: A Gone With the Wind Memoir, mainly selling copies directly to fans via personal appearances and the internet.

[4] Her father-in-law from her second marriage, Judd Conlon, was a musical arranger for many Disney films including Alice in Wonderland (1951) and Peter Pan (1953).

[citation needed] King died on September 1, 2010, at her home in Fort Bragg, California, at age 76, from lung cancer.