Although she was consulted by the makers of '' Bonnie and Clyde '' , especially actor Warren Beatty who she became friendly with , the film 's character of Blanche was not the slim , bravely devoted wife in her early twenties that Blanche had actually been during her time with the gang . On 10 April 1968 , at the 40th Academy Awards ceremony , Estelle Parsons won the Academy Award for Best Supporting Actress for her portrayal of Blanche , who remarked " That movie made me look like a screaming horse 's ass . " In a 2013 mini-series , she was portrayed by Sarah Hyland
40th Academy Awards
40th Academy Awards
Blanche Barrow