Barbara Sinatra, philanthropist and fourth and last wife of Frank Sinatra, has passed at the age of 90.
She died of natural causes on Tuesday surrounded by family and friends at her home in Rancho Mirage, California, according to John Thoresen, director of the Barbara Sinatra Children's Center.
The former Las Vegas showgirl and model, who was previously married to Zeppo Marx of The Marx Brothers, wed Sinatra in 1976 and they were together until his death from a heart attack in 1998 - the longest lasting of the singer's marriages.
In 1986, Barbara and Frank founded the Barbara Sinatra Children's Center, which provides services for abused, neglected and at-risk children, in LA and she was actively involved in the facility.
In 2011 she published the book Lady Blue Eyes: My Life with Frank Sinatra in which she recalled her first meeting her future husband when she was asked to be a doubles partner with Frank's second wife, Ava Gardner.
Barbara told The New York Times in 2011 that she wasn't bothered by Frank remaining on good terms with his ex-wives, Gardner, Mia Farrow and his first wife, Nancy Barbato.
"A very wise French lady once said to me: 'You never worry about old flames. You worry about new ones,'" she said.
