The Titanic star said that when it comes to her red carpet moments, she prefers to keep her style and make-up chic and simple.
'Glamour to me is about remaining graceful and understated,' she told InStyle magazine.
'For example, with very bold lip colours, you can't overdo the rest of your face. With a bright-red party lipstick, just go with lots of mascara and keep everything else clean. I love Lancome's L'Absolu Rouge lipstick as it lasts. Unless you spend the whole night snogging, you won't need to reapply.'
And her key to creating a flawless finish is mixing foundations.
'I rarely rely on one foundation - mixing two colours can make a big difference,' she said. 'I never use too much powder, only in the right areas (such as the T-zone). I have peachy fuzz on my cheeks, so I have to be careful with powder. I add a little of Lancome's Golden Hat Blush Palette on my cheeks - it just brightens up everything.'