A founding member of the iconic music group, The Supremes, Mary Wilson, has died.

The legendary singer, who rose to fame as a co-founder of the group at the age of 15 alongside Diana Ross and Florence Ballard in Detroit, died Monday at her Las Vegas home at the age of 76.

The cause of her death has not yet been announced.

Her longtime publicist, Jay Schwartz, confirmed her death to Fox News and shared that Wilson’s funeral service would be held privately in accordance with current health and safety guidelines.

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Schwartz also said a public memorial service was planned for later this year.

Motown founder Berry Gordy paid tribute to Wilson in a statement Monday night:

“I was extremely shocked and saddened to hear of the passing of an important member of the Motown family, Mary Wilson of the Supremes,” he said.

“The Supremes were always known as the Sweethearts of Motown.” Wilson, along with Diana Ross and Florence Ballard, joined Motown in the early 1960s.

“Mary Wilson was very special to me. She was a trailblazer, a diva and will be greatly missed.”

Wilson married Pedro Ferrer on May 11, 1974, in Las Vegas, Nevada.

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The marriage produced three children, Rafael, Turkessa and Pedro Antonio Jr.