Natalie Portman thinks beauty is "boring".

The 'Black Swan' actress hates being judged on her looks and can't understand why some people, particularly guys, become so obsessed with their appearance.

She said: "Beauty can be a hindrance, especially if that's the only thing that matters to other people. I'm also aware that being considered attractive can be a huge factor in getting work in my profession.

"Beauty can be boring if you're with a guy who is focussed on his looks or your looks all the time.

"I know a lot of male actors who are totally obsessed with creating a certain look."

Though Natalie, 29, doesn't understand the fascination with looking good, she appreciates a man with confidence in themselves.

The actress - who is dating dancer Benjamin Millepied - added: "I appreciate men who are confident in their masculinity, who don't need to work out every day, don't fuss about their appearance. I prefer men who know what they want out of life."