Similarities:I saw the dark eyes and similar teeth line with flatness of shape and noticed Hilary has some similarity with Diane Keaton. Correlation-Piper Perabo, Piper shares some similarity to Diane, having her square formation on top with additional roundess on bottom and Hilary is also similar to Piper, both having eliptic form of shape and dark eyes. They both have hazel/brown eyes and pink/brown tone in skin.
Differences:Noticably different, Diane’e eyes are lighter and Hil’s are darker. Hilary’s eyebrows are lighter than Diane’s darker ones. Hil’s skintone is lighter and she is more similar to Piper than Diane is. Diane has a square shape and Hil has a long egg shape. She is similar to Kate Winslet and Rachel Mcadams with a long-round shape and Diane isn’t.
So I will elaborate if necessary. Enjoy the visuals, let me know what you think and thanks for visiting.