Monroe style: One of Marilyn Monroes's tricks was creating a small wing on the bottom lash line. This helped the screen siren create her famous "bedroom eyes". Here's another key Monroe trick: apply white shadow in the outer corners before applying liner! ;)
I came across these pictures of Michelle Williams as Marilyn Manroe while looking up "My Week with Marilyn" (coming to BoxOffice soon). I think she was the perfect choice for the role. Can't wait to see the movie.