#7: Sigourney Weaver in Alien
In Alien (1979), Sigourney Weaver became Ellen Ripley — a calm, determined officer who faces a terrifying alien threat. Unlike the helpless heroines common in horror, Ripley was capable, intelligent, and brave. Her survival against the xenomorph made her one of the first true female action heroes in cinema.

At the time, Sigourney was a young stage actress with limited film experience. Alien was her breakout role, and she stunned audiences with her quiet strength. Coming from a theatre background and an Ivy League education, she brought realism and restraint to a genre that had rarely seen it.
