Heather Menzies-Urich played Louisa von Trapp in the Oscar-winning film
Heather Menzies-Urich, who played Louisa von Trapp in The Sound of Music
, died Christmas Eve at the age of 68, TMZ reports. Her son, Ryan Urich, says she had been diagnosed with terminal brain cancer a month earlier. "She was an actress, a ballerina, and loved living her life...