Miriam Hopkins = Cate Blanchett
Cate is the spitting image of Miriam. I love Miriams manner. She was a knockout in this and in Design for Living. Cate ain't bad herself, but alas, not a Hopkins.
shareI think she and Reese Witherspoon look alike. If Reese toned down her perkiness and sass and just played sly and deadpan, she could probably pull of a Miriam impression.
EDIT: I forgot who else I thought looked like Miriam--a mixture of Reese and Emilie de Ravin (from LOST).