Estelle Harris, George Costanza’s mother on ‘Seinfeld,’ passes away at 93 Sunday, April 3 by ABC NewsEstelle Harris, best known for playing George Costanza’s mother on Seinfeld, has passed away at age 93. Her son, Glen Harris, confirmed Saturday that she died of natural causes in Palm Desert, CA. “It is with the greatest remorse and sadness to... Read More.
