Joni Sledge, member of 'We Are Family' hitmakers Sister Sledge, dies at 60

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Joni Sledge, the second eldest sister in the hit pop group Sister Sledge, has died, a representative for the band says.

Sledge passed away at home in Phoenix, Ariz., Friday afternoon (March 10). She was 60 years old. Her cause of death has not been disclosed.

"Yesterday, numbness fell upon our family. Pray for us as we weep for the loss of our sister, mother, aunt, niece and cousin Joni Sledge. We thank you for privacy as we hurt for her presence, but also for embracing her radiance and the sincerity with which she loved life," a statement issued by her family says.

PHOTOS: Joni Sledge through the years

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One of the original members of the music group 'Sister Sledge' Joni Sledge performs the song 'We Are Family' at the CD launch party for the 'We Are Family' CD and DVD All-Star Katrina benefit CD in Los Angeles, California August 14, 2006. The CD produced by Rodney Jerkins will be released on August 29, the one year anniversary of Hurricane Katrina. REUTERS/Fred Prouser (UNITED STATES)
One of the original members of the music group 'Sister Sledge' Joni Sledge (C) poses with family members, niece Camille Sledge (L) and cousin Amber Sledge (R) at the CD launch party for the 'We Are Family' CD and DVD All-Star Katrina benefit CD in Los Angeles, California August 14, 2006. The CD produced by Rodney Jerkins will be released on August 29, the one year anniversary of Hurricane Katrina. REUTERS/Fred Prouser (UNITED STATES)
One of the original members of the music group 'Sister Sledge' Joni Sledge performs 'We Are Family' at the CD launch party for the 'We Are Family' CD and DVD All-Star Katrina benefit CD in Los Angeles August 14, 2006. The CD will be released on August 29, the one year anniversary of Hurricane Katrina. REUTERS/Fred Prouser (UNITED STATES)
LONDON, ENGLAND - NOVEMBER 03: (L-R) Kim Sledge, Debbie Sledge and Joni Sledge of the Sister Sledge attend Battersea Dogs and Cats Home's annual Collars and Coats Gala Ball at Battersea Evolution on November 3, 2016 in London, United Kingdom. (Photo by Dave J Hogan/Dave J Hogan/Getty Images)
NEW YORK, NY - JUNE 09: (L-R) Musicians Debbie Sledge, Joni Sledge, and Kim Sledge attend Songwriters Hall Of Fame 47th Annual Induction And Awards at Marriott Marquis Hotel on June 9, 2016 in New York City. (Photo by Gary Gershoff/Getty Images for Songwriters Hall Of Fame)
SHEFFIELD, UNITED KINGDOM - JULY 26: Joni Sledge of Sister Sledge performs on stage at Tramlines Festival at Devonshire Green on July 26, 2014 in Sheffield, United Kingdom. (Photo by Gary Wolstenholme/Redferns via Getty Images)
SHEFFIELD, UNITED KINGDOM - JULY 26: Debbie Sledge and Joni Sledge of Sister Sledge perform on stage at Tramlines Festival at (venue) on July 26, 2014 in Sheffield, United Kingdom. (Photo by Andrew Benge/Redferns via Getty Images)
LAS VEGAS - OCTOBER 1: Joni Sledge of Sister Sledge performs during the Justin Timberlake and Friends Old School Jam concert benefiting Shriners Hospitals for Children at the Planet Hollywood Theater for the Performing Arts on October 1, 2011 in Las Vegas, Nevada. (Photo by Isaac Brekken/WireImage)
Camille Sledge, Joni Sledge and Amber Sledge (Sister Sledge) (Photo by Michael Loccisano/FilmMagic)
Joni Sledge during 'We Are Family' CD and DVD Launch Party, Benefitting the Points of Light Foundation for Katrina Relief at 40/40 Club in New York City, New York, United States. (Photo by Michael Loccisano/FilmMagic)
NEW YORK - SEPTEMBER 22: Joni Sledge from the band Sister Sledge arrives at the Conde Nast Grey Goose Gala at TAO on September 22, 2004 in New York City. (Photo by Scott Wintrow/Getty Images)
American soul and disco group Sister Sledge, 4th July 1975. Clockwise, from left: Joni Sledge, Debbie Sledge, Kim Sledge and Kathy Sledge. (Photo by Michael Putland/Getty Images)
CIRCA 1984: (L-R) Debbie Sledge, Kathy Sledge, Joni Sledge and Kim Sledge of the vocal group 'Sister Sledge' pose for a portrait in circa 1984. (Photo by Michael Ochs Archives/Getty Images)
UNITED KINGDOM - JULY 19: American singing sisters from Philadelphia, USA: Kim, Debbie, Joni, and Kathy Sledge. (Photo by SSPL/Getty Images)
CIRCA 1980: (L-R) Debbie Sledge, Kathy Sledge, Joni Sledge and Kim Sledge of the vocal group 'Sister Sledge' pose for a portrait in circa 1980. (Photo by Michael Ochs Archives/Getty Images)
CIRCA 1972: (L-R) Debbie Sledge, Joni Sledge, Kathy Sledge and Kim Sledge of the vocal group 'Sister Sledge' pose for a portrait in circa 1972. (Photo by Michael Ochs Archives/Getty Images)
UNSPECIFIED - JANUARY 01: Photo of SISTER SLEDGE; Posed group portrait of Debbie, Kathy, Joni and Kim Sledge (Photo by RB/Redferns)
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Sister Sledge formed in 1971 and went on to record such hits as "We Are Family," "He's the Greatest Dancer," "Frankie" and more.

The Grammy-nominated "We Are Family," released in 1979, peaked at No. 2 on the Hot 100; the song also topped the R&B and disco charts. The album of the same name reached No. 3 on the Billboard 200.

"Recording the track 'We Are Family' was like a one-take party -- we were just dancing and playing around and hanging out in the studio when we did it," Sledge once recalled to the Guardian.

She is survived by her son, Thaddeus, and sisters Debbie, Kim and Kathy.

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