Joni Sledge, American singer and songwriter (b. 1956)
Joan Elise Sledge (September 13, 1956 – March 10, 2017) was an American singer best known as a founding member of the family vocal group Sister Sledge. The group was known for their hits during the mid-1970s through the mid-1990s; most notably 1979's "We Are Family" and "He's the Greatest Dancer".