That was over 25 years ago in 1996.
Today she is 74, and has starred in 84 movies in total, 55 since Mars Attacks! was released.
In Mars Attacks!, I think Glenn Close looks:
Mars Attacks! scores 6.1 out of 10 on The Movie Database.
Glenn Close's first acting role was as 'Rebecca' in Too Far to Go, released in 1979 when she was 32.