Joni Sledge, a founding member of the “We Are Family” disco quartet Sister Sledge, was found dead Friday at her home in Phoenix, Arizona. She was 60.The cause of death is unclear. The singer’s family posted about her death on the group’s official Facebook account.
Joni was the second-oldest daughter of a Broadway tap dancer and an actress. She and her three sisters ― Debbie, Kim and Kathy ― performed in church before forming a touring group in 1971.