LOS ANGELES (CBS SF/AP) – Charmian Carr, the actress best known for portraying the eldest von Trapp daughter in Rogers & Hammerstein’s “The Sound of Music,” has died. She was 73.

BEVERLY HILLS, CA - JULY 30: Actress Charmain Carr attends The Academy Of Motion Picture Arts And Sciences' Last 70mm Film Festival Screening Of "The Sound Of Music" at AMPAS Samuel Goldwyn Theater on July 30, 2012 in Beverly Hills, California. (Photo by Valerie Macon/Getty Images)

Actress Charmain Carr (credit: Valerie Macon/Getty Images)

Carr’s spokesman Harlan Boll says she died Saturday of complications from a rare form of dementia in Los Angeles.

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The actress portrayed Liesl von Trapp in the 1965 musical “The Sound of Music” and famously performed the song “Sixteen Going on Seventeen.”

Carr wrote a pair of books about her experiences: “Forever Liesl” and “Letters to Liesl.” She later went on to star with Anthony Perkins in the Stephen Sondheim television musical “Evening Primrose.”

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