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.

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

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."