Ketty Lester (born Revoyda Frierson; August 16, 1934) is an American singer and actress known for her 1961 hit single "Love Letters", which reached the top 5 of the charts in the US and the UK. She is also known for her role as Hester-Sue Terhune on the American television series Little House on the Prairie. In 2022, she was inducted into the Arkansas Black Hall of Fame.
Lester established herself as a television actress in the 1970s and 1980s, playing the roles of Helen Grant on the soap opera Days of Our Lives from (1975–77) and as Hester-Sue Terhune on Little House on the Prairie (1977–83).