Sister Sledge is an American musical group from Philadelphia, Pennsylvania, formed in 1972 and consisting of four singers, all of whom are sisters: Kim, Debbie, Joni, and Kathy Sledge. First entering the UK Singles Chart in 1975 with "Mama Never Told Me", their career went into decline before it revived under the magisterial production skills of Nile Rodgers and Bernard Edwards of CHIC. This association gave them their biggest successes which came in 1979: the popular disco anthems "We Are Family" (#1 R&B, #2 Pop in the U.S.) and "He's the Greatest Dancer" (#1 R&B, #9 Pop in the U.S.) Both songs were included on their eight song 1979 album We Are Family. Their follow up album was 1980's Love Somebody Today, which included the songs "Got to Love Somebody" (#6 R&B, #64 Pop in the U.S., #34 in the UK) and "Pretty Baby".Switching to producer Narada Michael Walden in 1981, they released the album All-American Girls, yielding two hits (the title track, which reached #3 R&B and #79 Pop in the U.S. and #41 Pop in the UK), and "Next Time You'll Know", which reached #28 R&B in the U.S.) The sisters continued singing new material throughout the 1980s and 1990s. They achieved an international #1 hit with "Frankie" in 1985 (#1 in the UK for 4 weeks). Their biggest hits have been re-released several times in the UK, often in newly-remixed versions which keep them sounding new and up–to–date. "We Are Family" is regarded by the feminist movement as a totemic statement – it reached number 7 in 1979, number 33 in 1984 and number 5 in 1993. "Lost in Music" reached number 17 in 1979, number 4 in 1984 and number 14 in 1993. "Thinking of You" reached number 11 in 1984 and number 17 in 1993. Additionnal data: Official website, Wikipedia.