Joni Sledge, who recorded the song We Are Family along with her sisters, has died at the age of 60.
She was found in her home in Arizona by a friend on Friday.
Sister Sledge formed in 1971 but had to wait 8 years for breakout success with the tune that became an anthem of unity and women's empowerment.
These stars have been paying tribute to the singer on social media.
<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr"><a href="https://twitter.com/hashtag/RIPJoniSledge?src=hash">#RIPJoniSledge</a> <a href="https://twitter.com/hashtag/WeAreFamily?src=hash">#WeAreFamily</a> My heartfelt condolences to your family because they are my family too. We did... <a href="https://t.co/m6fDmOnFUM">https://t.co/m6fDmOnFUM</a></p>— Nile Rodgers (@nilerodgers) <a href="https://twitter.com/nilerodgers/status/840751958935896068">March 12, 2017</a></blockquote>
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<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">So sorry to hear that Joni Sledge has passed, my condolences to her family, friends and love ones. <a href="https://twitter.com/hashtag/Sistersledge?src=hash">#Sistersledge</a> we are family! <a href="https://twitter.com/hashtag/RIP?src=hash">#RIP</a> ðŸ™ðŸ™ðŸ™ðŸ™ <a href="https://t.co/VoS8hx70dl">pic.twitter.com/VoS8hx70dl</a></p>— La Toya Jackson (@latoyajackson) <a href="https://twitter.com/latoyajackson/status/840826646185693184">March 12, 2017</a></blockquote>
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<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Sister Sledge Forever. <a href="https://t.co/8wYoAagnrf">pic.twitter.com/8wYoAagnrf</a></p>— RuPaul (@RuPaul) <a href="https://twitter.com/RuPaul/status/840801399600439296">March 12, 2017</a></blockquote>
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