Sigourney Weaver ''feels sorry'' for actresses who don't have children.

The 'Alien' star - who has 24-year-old daughter Charlotte with husband Jim Simpson - thinks career success pales into insignificance when compared with the feeling of being a mother.

Asked if she can identify with women who choose their careers over having kids, she said: ''I feel sorry for women like Katherine Hepburn. She might have won four Academy Awards but she never got to enjoy what it is to be a mother. I find that very sad.''

The 64-year-old actress insists Hollywood bosses shouldn't make allowances for women with children and having a good support network is the key to delivering personal and professional life.

She added to HELLO! magazine: ''It's not Hollywood's responsibility to worry about a woman's choice to become a mother.

''I have a wonderful husband who's helped out a lot when I was working. I think teamwork is key if you want to have a career in Hollywood.''

Though Sigourney is preparing to turn 65, she isn't upset about reaching the milestone age.

She said: ''I'm healthy, happy and looking forward to it.

''Turning 65 doesn't mean my life is over. It's just another exciting chapter.''