Sister Sledge is an American musical group from Philadelphia, Pennsylvania, formed in 1971 and consisted of four sisters: Debbie Sledge (born July 9, 1954), Joni Sledge (born September 13 ...

Sister Sledge is an American musical vocal group from Philadelphia, Pennsylvania. Formed in 1971, the group consisted of sisters Debbie, Joni, Kim and Kathy Sledge. The siblings achieved international ...