The show will be held on Sunday night at the National Gallery of Modern and Contemporary Art.
Shailene Woodley and Donatella Versace were also among the guests.
Spotted at Armani Privé in the wake of an Oscar snub, the German actress will star in the upcoming spy thriller by Israeli director.
“Ceci n’est pas” a Dior masked ball inspired by Maria Grazia Chiuri’s surrealist collection shown earlier in the day.
The collection will be presented by appointment only during Haute Couture.
Laura Carmichael, Pixie Lott and Melissa George were also among the guests.