Thelma Louise Mandrell (born July 13, 1954) is an American country music singer. She is the younger sister of fellow country singer Barbara Mandrell, and older sister of actress Irlene Mandrell. Louise had a successful singing career in country music from the 1970s, with a string of hits during the 1980s.

Source: Wikipedia (https://en.wikipedia.org/wiki/Louise_Mandrell)