The seductive pose seems to be alluding to the co-stars' intimate relationship in their film. The Clouds of Sils Maria is about a Hollywood starlet named Maria Enders (Binoche), who decides to star in a revival of the play that made her famous 20 years prior. There seems to be a bit of sexual tension between the older actress and her assistant Valentine (Stewart), which leads to a shot of Stewart in a black thong.
Binoche admitted that she "googled" Stewart, 24, before working with her. "I needed to know whom I am supposed to meet and play with. I did watch some interviews of yours and instantly decided that I like you. I also watched On The Road -- and skipped Twilight," the acclaimed actress, 50, admitted. "Although I have to admit that the first time I ever saw you was on my daughter's walls. I remember walking into her room thinking: So what the hell is this about?"
The movie, which also stars Chloe Grace Moretz, is set to hit theaters in the U.S. on Oct. 9, 2014. In the meantime, see Stewart in drag for Jenny Lewis' "Just One of the Guys" video.