The ad, which promotes the Age Perfect line, sees Helen being given a seat by a younger woman at a bus stop (cue excellent side-eye sass).
But, by the end of the ad, she proves age is just a number and emerges looking super-sexy in a clinging black skirt, cool leather jacket and bright red lips.
As she does up the jacket, Helen says,"Grow another year bolder", before stepping out looking fabulous.
Using the famous tagline at the end of the ad, she asks, "So are we worth it?" while looking a hot young man stretching. Answer? "More than ever." Said with a naughty look in her eye.
At the time of landing the role as ambassador for the Age Perfect anti-ageing range, Helen said, "I am not gorgeous and I never was, but I was always OK looking and I'm keen to stay that way.
"I have always loved the L'Oréal Paris brand and I am truly delighted to become an ambassador and join such an impressive group of high-achievers. I hope I can inspire other women towards greater confidence by making the most of their natural good looks."
Well the ad is certainly aspirational. And another thing Ms Mirren? You're definitely looking gorgeous in it.
Meanwhile, in other Helen news, this is why we love her so much: She keeps it real while looking like a million dollars.