Early career

The group toured much of the East Coast, including New York, New Jersey, and home town Philadelphia with Florez acting as their manager (and tour bus driver) and Debbie as musical director. They released their first single "Time Will Tell" in 1971 on local music label Money Back. In 1973, they released the single "Mama Never Told Me", which became a top-20 hit in the UK in 1975, but with the Patrick Grant and Gwen Guthrie single "Love Don’t Go Through No Changes On Me" (released in 1974), the siblings enjoyed their first success. The song was a big hit in Japan, and as a result, the girls were flown to the country to perform at the Tokyo Music Festival, where they won the Silver Prize. The sisters also performed at the Zaire 74 concert in Africa alongside James Brown during the Rumble in the Jungle boxing event.

Sister Sledge's first album, Circle of Love, was released by ATCO (a subsidiary of Atlantic Records) in 1975,^[2] and included songs written by Gwen Guthrie and Gwen's then-boyfriend, studio bassist Patrick Grant, who later changed his name to Haras Fyre. The group enjoyed some success in Europe, and as a result, the album Together was recorded in Germany in 1977. Released through the Cotillion label, another Atlantic subsidiary, the album produced a minor hit with the single "Blockbuster Boy" reaching number 61 on the US R&B chart.

International breakthrough

At something of a crossroads in their careers, the future seemed a little uncertain for the group, but Atlantic Records connected them with producers Nile Rodgers and Bernard Edwards of the band Chic, and the situation changed.^[2] After some initial challenges to working collaboratively, the breakthrough album We Are Family was recorded and released by Cotillion on January 22, 1979. The lead single "He’s the Greatest Dancer" charted at number one R&B and was a Top 10 Pop crossover smash, peaking at #9. In 1979, the record's anthemic title track "We Are Family" followed and became a worldwide smash charting at number two pop and number one R&B. The song and group were nominated for a Grammy Award and "We Are Family" was adopted as the official anthem for the Pittsburgh Pirates, who went on to win the World Series that year. Sister Sledge was duly invited to perform the national anthem at the opening game in front of 45,000 fans.

The album was certified platinum by the RIAA and produced two more classic disco singles, "Lost in Music" and "Thinking of You". Around this time, Debbie Sledge went on maternity leave and the eldest sister, Carol, filled in for her.^[3] They were named Billboard Best New Artists. In 1980, their follow-up album Love Somebody Today (also written and produced by Nile Rodgers and Bernard Edwards) was released. The lead single "Love Somebody Today" scored moderately well, charting at number six on the R&B and number 64 on the pop charts. An extensive three-year live tour began and the quartet performed sold-out shows all over the world.

In 1981, Sister Sledge worked with Narada Michael Walden, who produced their fifth studio album, All American Girls.^[2] The project was intended as a collaboration, but the resulting album is generally attributed to Narada Michael Walden. The title track became a number-three R&B hit, but the following singles "Next Time You'll Know" and "If You Really Want Me" did only moderate business. As a tribute to the late Bob Marley, a reggae-influenced mix of the album's fourth release "He's Just a Runaway" was recorded at Radio City Music Hall in New York. The girls self-produced their next record The Sisters in 1982. The album spawned the number-14 R&B and number-23 pop hit "My Guy" (a cover of the Mary Wells classic). The group subsequently appeared on the March 1984 episode of The Jeffersons entitled "My Guy, George", in which they performed the song.

Continued European success

The album Bet Cha Say That to All the Girls was released in 1983, the lead single from which featured American Jazz singer Al Jarreau. The group experienced renewed success in 1984, when Atlantic Records belatedly released "Thinking of You" followed by a Nile Rodgers remix of "Lost in Music" in the UK, the latter peaking at number four. The following year, they released their seventh studio album When the Boys Meet the Girls and continued success in the UK. Released by Atlantic Records, lead single "Frankie" hit the top spot on the UK Singles Chart, spending four weeks at number one.^[2]

In 1989, Kathy began a solo career, while still active with Sister Sledge for certain shows. Debbie, Joni, and Kim continued to perform as Sister Sledge and in 1992 collaborated with Jean-Paul "Bluey" Maunick from UK acid jazz group Incognito on the single "World Rise and Shine". The song featured on their greatest-hits album And Now…Sledge…Again. The single reached number one in Italy and resulted in the trio hosting their own TV show there. The group (including Kathy) experienced a resurgence of success in the UK the following year when the Sure as Pure remix of "We Are Family" was released and peaked at number five, followed by remixes of "Lost in Music" (number 14) and "Thinking of You" (number 17). A greatest-hits album, The Very Best of Sister Sledge 1973–93, was also released. In 1996, after witnessing a shooting in LA, Joni Sledge wrote the protest song "Brother, Brother Stop" that was recorded by the trio and featured on a new greatest-hits CD. In 1997, Joni produced the group's eighth studio album, African Eyes, that garnered critical acclaim and was nominated for a Grammy as best-produced CD.

2000–present

In December 2000, Sister Sledge (Kathy, Debbie, Joni, and Kim) performed at the White House for the President and First Lady at the final Christmas party of the Clinton administration. The following year, in the aftermath of the September 11 attacks, all four sisters re-recorded "We Are Family" as a benefit record with a host of other artists, including Diana Ross and Patti LaBelle. Debbie, Joni, and Kim produced solo material during this period before being reunited to record the album Style in 2003. Due to legal difficulties, the album remained unreleased. Kim, an ordained minister, took some time out from the group, but soon joined Kathy and Joni on various international shows. Joni and Debbie continued to tour (with various guest artists, including Debbie's daughter Camille Sledge, completing a trio), and in 2005 performed on the famous pyramid stage at the Glastonbury Music Festival in the UK. In 2011, Sister Sledge came together on The Oprah Winfrey Show for the "Women Who Rock" episode. In the summer of 2012, Tanya Tiet was added to the lineup.^[4]

In 2014, Sister Sledge headlined at the Tramlines Festival in Sheffield, United Kingdom^[5] along with hip-hop icons, Public Enemy, and collaborated with Scottish electronic producer The Revenge, recording the track "Stay a While" in London. With Kim rejoining in 2015, all three sisters performed at a large-scale charity benefit in London for Save the Children and were invited to perform for Pope Francis along with Aretha Franklin and Andrea Bocelli at the World Festival of Families in Philadelphia at Eakins Oval on September 26, 2015, which was covered by global media and went viral due to crowds of nuns in the audience dancing to "We Are Family".^[6] Debbie, Joni, and Kim soon thereafter launched the brand concept, Nothing is Greater Than Love.

Joni Sledge, born September 13, 1956, died of natural causes at her home in Phoenix, Arizona on March 10, 2017 at age 60.^[7] Following Joni's death, Debbie and Kim announced that they will continue to perform as Sister Sledge.^[8] In 2019, Kim departed from the group and was replaced by Camille Sledge.