That was over 28 years ago in 1992.
Today she is 70, and has starred in 94 movies in total, 75 since Alien³ was released.
In Alien³, I think Sigourney Weaver looks:
Alien³ scores 6.2 out of 10 on The Movie Database.
Sigourney Weaver's first acting role was as 'Alvy's Date Outside Theatre' in Annie Hall, released in 1977 when she was 27.
Find DVDs, posters and memorabilia about Alien³ on Amazon.