The actress has never seemed afraid of baring all onscreen and famously stripped down for intimate parts in The Reader.

While she believes it's important to be open to the idea, it's not something she's keen on.

"It's not something one enjoys necessarily," she admitted to Total Film.

"I think that would be a very honest and fair thing to say. But it's sometimes a part of my job."

In 1997 Kate took on the iconic role of Leonardo DiCaprio's love interest in Titanic.

The 38-year-old was then, and still is, considered one of the most beautiful women in Hollywood, but she believes there's no need for being immaculate.

"As I get older, I really don't care what people think of me and the way I look... I don't have that physical insecurity anymore," she shrugged.

"I just don't have it. Plus I do feel very determined that if I'm called to do any level of nudity on screen, I have to look like myself. The idea of that whole perfect thing makes me so crazy."

The actress recently revealed that her hair is too "fluffy" sometimes.

She takes a very relaxed approach to styling.

"Hairdressers know better than I do, so I leave it to them as long as it's not too coiffed. I had a French braid in my hair recently for an event and I loved it.

"It was funny taking it out though - my husband, Ned [Rocknroll], and I were over the sink trying to work out which bits were extensions and what was hair. I was cutting bits, saying 'Hang on, was that mine? Oops, I just cut my own hair,'" Kate laughed.