Carr was best-known for playing the eldest of the von Trapp family in the musical film The Sound of Music.

According to her spokesman, Harlan Boll, Carr passed away on Saturday due to complications from a rare form of dementia.

The actress played Liesl von Trapp in the 1965 film which also starred Julie Andrews and Christopher Plummer.

She famously performed the song Sixteen Going on Seventeen. Aside from a role opposite Anthony Perkins in the Stephen Sondheim television musical Evening Primrose, Carr did not pursue acting but went on to be an interior designer.

The Sound of Music remained of great importance to her, and she wrote two books on her experiences of the film.

‘I tell people that they should consider sing-a-long Sound Of Music like going to a therapist,’ she told Associated Press before a 2005 appearance. ‘It’s just a kind of therapy. They can move around. They can dance and talk back to the screen. They can skip their appointment with the shrink that week.’

20th Century Fox, which was the studio that produced The Sound of Music, noted Carr’s death on Twitter:

 

Kym Karath, who played Gretl, the youngest of the Von Trapp children, wrote on Twitter:

 

Debbie Turner, who played Marta von Trapp, also paid tribute to the actress:

 

Seth MacFarlene tweeted:

 

Other fans of the actress also paid tribute:

 

 

 

Carr is survived by her four siblings, her two children and four grandchildren. She is also survived by the six other actors who were cast as the von Trapp children.

 

Via The Guardian