Mary Wilson

Mary Wilson, founding member of The Supremes, poses on the roof of Capitol Records on Thursday, June 12, 2014, in Hollywood, Calif. (Source: Casey Curry/Invision/AP)

LAS VEGAS (AP) — Mary Wilson, the longest-reigning original Supreme, has died at 76 years old. Publicist Jay Schwartz told KABC-TV that Wilson died in Las Vegas.

When she died and other details weren’t immediately clear. Wilson, Diana Ross and Florence Ballard made up the first successful configuration of The Supremes.

She stayed with the group until it was officially disbanded by Motown in 1977.

The group's first No. 1, million-selling song, “Where Did Our Love Go,” was released June 17, 1964.

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