The 38-year-old actress finds it easier to focus on her lines and the story if she is not preoccupied with looking perfect all the time on set, reported Contactmusic.
"I've always preferred playing characters who aren't supposed to look beautiful. I love saying, 'Don't make me look nice,' or, 'Make my face look rounder," Winslet said.
"It's less to think about if my look is raw and it means less being fiddled with by make-up artists. That way, I get the best of both worlds - that side of it for my job and the dressing up bit for the red carpet," she added.