The 73-year-old actress shared her transformation ahead of the awards on Sunday, from bare-faced to red carpet ready, with her 545,000 Instagram followers.
Mirren also shared her “after” look, dressed in a Schiaparelli Haute Couture gown complete with Harry Winston diamonds.
Fans praised her for her honest transformation pictures.
One wrote: “You know, it’s hard for people to understand that celebrities don’t roll out of bed looking perfectly fabulous. (At least it is for me). You are beautiful before, and so glamorous after! You’re an inspiration and favorite of mine.” [sic]
Another added: “You are beautiful with makeup, but without it you are a goddess!”
Mirren also shared pictures of her having a ball at the ceremony, including a shot of her and Sarah Paulson in co-ordinating pink dresses.
While Mirren chose a glamorous look for the red carpet, ‘Bridesmaids’ actress Melissa McCarthy took a different approach, donning an Adidas tracksuit for the Vanity Fair Oscars after party.
Meanwhile, ‘Games of Thrones’ star Jason Momoa dressed his pink velvet tuxedo down with the help of a matching scrunchie worn around his wrist.
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