British actress Kate Winslet often throws up on movie sets as she feels so nervous ahead of key scenes.

The Titanic star has been making movies for more than 20 years, but still feels overwhelmed by anxiety during filming and is often sick with nerves.

She tells Britain's Glamour magazine, "Acting is b**ody scary. I still have moments when I think, 'I can't do this - everybody thinks I'm absolutely s**t.' There are scenes I absolutely dread - there was a scene in (new movie) Labor Day; the whole courtroom sequence in (2008 film) The Reader. I often throw up, which I'm a bit embarrassed about. It's the adrenaline."