Last of the three singing McGuire Sisters dies at 89

Phyllis McGuire, the lead singer of the wholesome 1950s pop trio the McGuire Sisters, has died at 89.

The Ohio-born entertainer passed away Tuesday at her home in Las Vegas. No cause of death was revealed.

McGuire, along with sisters Ruby and Dorothy, racked up 11 Top-20 hits between 1953 and 1960. “Goodnight, Sweetheart, Goodnight,” and “Something’s Gotta Give” are among the group’s most enduring songs, but they will be most likely remembered for their 1955 hit “Sincerely.”

The melodic ditty about an unrequited love was the McGuire Sisters’ first No. 1 single and the trio’s biggest hit in the U.K.

Two years later, they scored their second chart-topping song with “Sugartime.”

The catchy ditty featuring the lyrics “Sugar in the mornin’ / Sugar in the evenin’ / Sugar at suppertime / Be my little sugar / And love me all the time” was the most-played radio song for four weeks in February 1958, according to Billboard.

With the group’s popularity waning in the 1960s, Phyllis McGuire kicked off a solo career, scoring a minor hit with the 1964 single “I Don’t Want to Walk Without You.”

Around the same time, she appeared in the Frank Sinatra comedy “Come Blow Your Horn.”

In the 1960s, she was romantically linked to Chicago mob boss Sam Giancana. A conspiracy theory asserts Giancana was involved in the 1963 assassination of President John F. Kennedy.

A fictionalized version of their relationship was the subject of the 1995 HBO film “Sugartime,” starring Mary-Louise Parker as McGuire and John Turturro as Giancana, who was murdered in 1975.

McGuire returned to the stage with her sisters in 1986 and continued to perform until 2004, according to the Las Vegas Review-Journal.

Dorothy McGuire died in 2012 and sister Ruby died six years later.