This ability to speak candidly was perfectly on show during a recent interview with Allure magazine.
The subject she spoke on; the women closest to President Donald Trump - namely Ivanka and Melania.
Speaking to Allure magazine, Mirren said of Ivanka Trump:
[Ivanka] talks a good game, but there’s no substance. Her book is so ignorant about how the majority of women live, talking about ‘Make time for yourself to have a massage.’ Puh-lease.
The book is question is Ivanka's latest title: Women Who Work: Redefining the Rules for Success, which was on the receiving end of some deliciously scathing reviews. Particularly as its release coincided with her becoming a White House advisor and receiving her own West Wing office space.
Dame Mirren also shared her thoughts on the First Lady Melania Trump, referring to her as "old Mel"
You look at old Mel there, and she is one of the most powerful women in the world because she could take him down.