Updated: Paul McCartney engaged to girlfriend Nancy Shevell

Paul McCartney has become engaged to long-time girlfriend Nancy Shevell, it has been confirmed.

An insider close to Shevell has told People that the couple are very much looking forward to tying the knot.

"Nancy and Paul are getting married," the source revealed. "Ring and all - very exciting… They have the right chemistry. They're both cool, chilled out and optimistic."

The former Beatle's publicist said: "We're all thrilled for him."

McCartney and Shevell - 17 years younger than the singer - began dating four years ago after meeting in the Hamptons.

The singer has been married twice before. He wed first wife Linda in 1969 and later professed that they only spent a handful of nights apart before his spouse's untimely death nearly 30 years later.

Four years after Linda's death, McCartney married model Heather Mills, but their union ended in divorce in 2008.

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