Heather Menzies Urich (December 3, 1949 – December 24, 2017) was a Canadian–American model and actress, known for her roles as Louisa von Trapp in the 1965 film The Sound of Music. Beautiful, sunny, and engaging blonde actress Heather Menzies was born on December 3, 1949 in Toronto, Canada. Her family moved to the United States when Heather was eleven. She graduated from Hollywood High School and subsequently attended the Falcon Studio's University of the Arts in Hollywood. Heather made a strong and promising film debut as Louisa von Trapp in the delightful classic musical The Sound of Music (1965). Menzies also appeared with The Sound of Music (1965) star Julie Andrews in the epic drama Hawaii (1966). After initially establishing herself as an innocent ingénue in the 1960s, Heather reinvented herself with a much sexier image in the 1970s. She did a nude pictorial for the August 1973 issue of "Playboy." Heather gave an extremely sweet and appealing performance as mad scientist Strother Martin's lovely and loyal daughter in the enjoyably oddball horror feature Sssssss (1973). Menzies was likewise quite spirited and personable as a feisty skip tracer in the terrific fright film cult favorite Piranha (1978).