"Let's imagine, you're with your wife, in bed or anywhere, here, and then all those people are watching. Yeah, cameras, like 50 people are watching. Do you still find it sexy?" she asked host Stephen Colbert.
When ET spoke with her earlier this month, Cotillard called Pitt a "good man."
"[Brad is] such a good man," she gushed about her A-list co-star. "Of course he's an amazing actor. He's such a good person that it's really not difficult to get along with him."