The 31-year-old actress, who is expecting her first child with Muse frontman Matt Bellamy, said that she likes looking natural.
She told OK! Magazine, 'It's kind of nice because I don't like being made up, I feel like I'm a guy like that.
'I'm the kind of person who walks out of my house and doesn't even think about putting on make-up, unless I have a big old zit, then I'll try to cover it. But I'm not really a fussy person.'
'I pay for it sometimes, because when you're getting your picture taken you think, 'God, I really should have put on a little blush because that is just not OK.' But I can't be bothered, who has got the time when you have kids? You'd rather be doing other things.'