What do Helen Mirren and Doris Day have in common? Both women are award-winning actresses with careers that spanned over decades and neither can remember how old they are.

On her birthday last year, Day found out that she was two years older than she thought. According to The Associated Press, the Love Me or Leave Me star was actually born on April 3, 1922 which makes her 95 years old not 93.

Although taken aback, Day released a statement expressing her happiness over finding out her real age.

Recently, Mirren received the same shock while appearing on The Ellen DeGeneres Show. The Queen star and DeGeneres were on the topic of aging when she figured out how old she really is.

Apparently, Mirren and her husband, director Taylor Hackford, always thought they were a year older. As you can imagine, she was really surprised when DeGeneres made the revelation, and it was all caught on video.

Mirren has always taken the "age is just a number" approach to life, and she's proven that to us time and again. She is very active in the Hollywood scene and as a spokesperson for L'Oreal, she walked in her first-ever L'Oreal runway show last October.

Up until a few days ago, the British actress was convinced that she was 73, but she thought wrong. In fact, she is one year younger.

"I think I'm 73. My husband and I, we forget," she told DeGeneres. She explained that she and Hackford consider themselves a year older at the beginning of the year, and for a while they actually thought they were 74.

However, once DeGeneres cleared the confusion up, excitement washed over Mirren.

"I'm 72? This is fantastic!" she said. "This is amazing! I just made a whole year!"

Of course, being the comedian that she is, DeGeneres couldn't let the moment slide without a joke.

"It does seem like you're aging, you don't know your age," DeGeneres joked. "I was gonna say"”you look great, but you're losing it."

This isn't the first time that Mirren, whose birthday is on July 26, has publicly discussed her age. She spoke to Allure in August of 2017 and admitted that while she is fine with being a septuagenarian, she doesn't like being treated like she's old and incapable of doing certain tasks without assistance.

"If people treat me like the age I am, I get absolutely insulted, really cross," she said. "I hate when people give up their seat for me. No, no, no. I don't want your seat."

I hope I can look half as good as she does when I'm in my seventies.

Have you ever forgotten your real age? Let us know in the comments!