Kate Winslet is like the energizer bunny - she keeps going and going, even when she tells herself to stop. The stunning, flawless actress recently confessed that doing sex scenes in her new movie sickened her, but it was part of the job.

The "Titanic" sensation, who plays a mother having an affair with her friend's husband in "Little Children," says the thought of stripping naked left her feeling "awful."

The 31-year-old told Britain's BBC Radio 1, "When you get up in the morning and you know you are going to have to go to work and take your clothes off it's the worst day of your life. You feel awful. You feel sick. And you remind yourself you must never agree to do this again."

Kate famously posed naked, wearing only a diamond necklace in the box office record breaking movie, "Titanic."

She has also stripped naked and took part in raunchy sex scenes in "Heavenly Creatures," "Hideous Kinky" and "Holy Smoke."

Her latest film, which premiered at the London Film Festival on Wednesday night, also stars Oscar-winning actress Jennifer Connelly.