Sister Sledge is an American musical group from Philadelphia, Pennsylvania, that rose to fame during the disco era in the late 1970s. Comprised of four sisters Debbie, Joni, Kim, and Kathy Sledge, the group is best known for their anthemic dancefloor hits like "We Are Family" and "He's the Greatest Dancer," both produced by the influential Bernard Edwards and Nile Rodgers of Chic. Their style blends R&B, soul, and disco, marked by harmonious vocals and infectious dance rhythms. Sister Sledge's music has left a significant mark on the disco genre, with "We Are Family" becoming an enduring anthem of unity and sisterhood.