The 70-year-old "Woman In Gold" star, however, believes there is still progress to be made, reported New York Post.
"I've witnessed such incredible change in my life that sometimes it makes me overly optimistic, and I think I'm wrong to be overly optimistic," Mirren said.
The actress said it is easier for young artists but post marriage things become difficult for the actors.
"When you're young the world is out there and it's your oyster. It gets very difficult when you have children. The film business is very tough on men and women... They work incredibly long hours.