Moore is not alone in her complaints about the industry’s problems with older women. In fact, Meryl Streep, Emma Thompson, Helen Mirren, Patricia Arquette and Anne Hathaway are just a few of the actors who have spoken out to highlight the issue of Hollywood ageism, with Thompson declaring it to be "insane".

Olivia Wilde and Maggie Gyllenhaal have also discussed being turned down for parts because they were deemed too old for the leading man – who were all played by male actors older than them.

However Charlize Theron famously defended youth-obsessed studio bosses when she told Entertainment Tonight: “Now that I'm 41 I work much more than 20 years ago, and I enjoy it even more. And all the women I know say the same thing, so it's time to stop this cliché.”

Images: Rex Features

Julianne Moore has a message for everyone obsessing over her age