I think the Cary Grant movie you are talking about was called "People Will Talk."
Yup- That's the one! And, unfortunately, Cary said it was one of his least favorite movies- having nothing to do with her- just a strange and weird story...But she was beautiful in it anyway! I thought they also did Crisis together, but I found out that was Paula Raymond, who looked a lot like Jeanne, it turns out...
It was a weird movie. I couldn't believe how awkward it was.
But Jeanne was beautiful and Cary was just starting his run with the Quintino suits, so if the female lead and suits look great- who cares about the story!!