Let’s be honest: the question “How old is Robin Wright Penn?” has probably haunted you at 3 AM, right after you finished your fourth rewatch of The Princess Bride. Relax, I’ve done the math so you don’t have to. She was born on April 8, 1966, which—brace yourself—makes her a fellow traveler in the glorious, creaky-jointed club of people who remember when MTV actually played music videos.

The Buttercup Math

If you’re doing the mental gymnastics, yes, she was 21 when she played the ethereal, screaming Buttercup. That means she is now old enough to be your cool, slightly intimidating mom who still rocks a leather jacket. Seriously, she’s 57 years old as of this writing, and she’s been aging like a fine wine that also does CrossFit and runs a media empire.

Here’s a surprise: she has been acting for over forty years. The woman debuted on “General Hospital” in the 1980s, which is ancient history in Hollywood terms—think black-and-white photos of cavemen painting telenovelas on walls.

Claire Underwood’s Secret

If you know her as the ruthless, neck-snappingly ambitious Claire Underwood from House of Cards, you might assume she’s a time-traveling android. She played a power-hungry First Lady for six seasons while barely breaking a sweat, which is a biological miracle most of us can’t manage when the Wi-Fi goes out for ten seconds.

But here’s the kicker: when she started that show in 2013, she was 47. Now she’s 57, and she looks almost exactly the same—which is suspicious. I’m not saying she’s a vampire, but I’m also not saying she isn’t sipping from a goblet of youth every night before bed.

Robin Wright And Sean Penn's Director Daughter Is Absolutely GorgeousRobin Wright And Sean Penn's Director Daughter Is Absolutely Gorgeous

The Sean Penn Era (and Beyond)

You’ll often hear her referred to as “Robin Wright Penn,” a vestige of her marriage to the famously intense Sean Penn. They were married from 1996 to 2010, which in Hollywood years is basically a geological epoch. She dropped his last name from her stage credits after their divorce, but us lazy humans can’t stop adding it back—it’s like a verbal tic.

Fun fact: she was once engaged to Jason Patric and Dane Witherspoon before that. At this rate, she’s collected more fiancés than I have unread emails. And she’s still only 57! Slacker.

Robin Wright et Sean Penn ensemble pour la première fois depuis desRobin Wright et Sean Penn ensemble pour la première fois depuis des

So, Is She “Old”?

Let’s put it in perspective: she was born the same year as Cindy Crawford, Billy Bob Thornton, and Mike Tyson. That’s a weird Venn diagram of talent, abs, and ear-biting. She’s also three years older than Keanu Reeves, who is apparently immortal, so she’s basically a spring chicken by comparison.

If you’re freaking out because you’re 57 and don’t look like a supermodel who just discovered Pilates, join the club. Most of us look like we’ve been hit by a cheerful truck at that age. Robin Wright is the exception, not the rule.

Sean Penn Robin Wright YoungSean Penn Robin Wright Young

The Final Reckoning

So, to answer the burning question: Robin Wright Penn is 57 years old, give or take a few months of botox and good lighting. She is proof that age is just a number—unless you’re a bottle of milk, in which case it’s a hard deadline. She’s older than your iPhone but younger than the concept of “cable TV.”

Now go watch Forrest Gump again. Jenny was 28 in that movie, which means she’s now old enough to be Forrest Gump’s mom. And you know what? She’d still probably outrun him. Age is just a number, people. A number we can’t remember without looking it up.