Marg Helgenberger was 40 in Erin Brockovich when she played the character 'Donna Jensen'.
That was over 24 years ago in 2000.
Today she is 65, and has starred in 38 movies in total, 8 of those since Erin Brockovich was released.
In Erin Brockovich, I think Marg Helgenberger looks: