From Wikipedia, the free encyclopedia. Suzanne DeLee Flanders Larson (known professionally as Susanna Foster) (6 December 1924 – 17 January 2009) was an American film actress best known for her leading role as Christine in the 1943 film version of The Phantom of the Opera. Description above from the Wikipedia article Susanna Foster, licensed under CC-BY-SA, full list of contributors on Wikipedia.