2011. One of the most celebrated and distinctive singers of the past century or so, Kathy Sledge has now been a star for almost four decades, ever since she and her older sisters ? Kim, Debbie and Joni - formed Sist..

1990. Sister Sledge were an R&B vocal group from Philadelphia consisting of sisters Debra, Joni, Kim & Kathy Sledge. They issued numerous albums throughout the1970s & 1980s. They are best known for their..