says stripping naked in her new movie took her to the "brink".
The British beauty
- who bares all in post-war drama 'The Reader' - found playing a former concentration camp guard in the film physically and emotionally draining.
She said: "It really took me to the brink in many ways. To bring my character Hanna Schmitz to life was an absolutely enormous challenge and a huge responsibility as well, because it's a much-loved piece of German literature. Many people have differing opinions of Hanna Schmitz - they love her, they loathe her."
Kate, whose character embarks in a relationship
with a younger man in the movie, also revealed she had no problem filming the sex
scenes with her 18-year-old co-star David Kross.
The 33-year-old actress explained to 'Entertainment Tonight': "It was the same as shooting any other scene of that nature. A scene with that level of intimacy involving nudity, you know, it's always nerve-wracking, and you really have to rehearse those scenes so that everybody knows exactly what's going on. He didn't need that much looking after."
'The Reader', which also stars Ralph Fiennes, is released worldwide in January.