Margot Robbie
Margot Robbie quite literally dressed the part at the festival. In her new film Once Upon A Time In Hollywood, which is directed by Quentin Tarantino, Robbie plays the role of real-life Hollywood movie star, Sharon Tate -- it just so happens that Tate had a very similar hairstyle at the 1968 Cannes Festival. I respect Margot’s dedication in playing the character (head to toe)!