Sister Sledge was an American female group composed of members of the Sledge family. The group was formed in Philadelphia, Pennsylvania, in 1965, and originally consisted of sisters Debbie, Joni, Kim, and Kathy Sledge. Their music crosses genres of R&B, disco, pop, rock and Philly soul. Sister Sledge first performed in talent shows and clubs in Philadelphia and eventually signed with Money Back Records. In 1972, they left Money Back Records and signed with Atlantic Records subsidiary label Atco Records,... [more on Wikipedia]