The celebrated actress, who first met her director husband Taylor Hackford on one of his films ("White Nights"), will ring in 25 years of marriage this December (and 10 years of being together before that).
Speaking to People for their Beautiful Issue, the 76-year-old opened up about her relationship and something unexpected that came out of the pandemic.
"I've worked every year since I was 20," Mirren explained. "COVID was the first time in the whole of my life I've not worked for six months."
"[So many people] were suffering through that terrible, terrible time, but what was valuable for me was that I got to spend time with my husband and sit across the table from him every night for six months — which I've never done before — and not worry about or even think about work."
She did, however, have some advice to offer when it comes to longevity: "A really important part of love is to maintain your own sense of identity. In a way, that's the most important thing of all, to not subsume yourself into someone else, far from it. Be honestly and authentically who you are."