Michael Caine

Michael Caine turned 90 on March 14, 2023, and celebrated with a star-studded 𝐛𝐢𝐫𝐭𝐡day party, which included celebrities like Tom Cruise in attendance at the London bash. Following The Great Escaper filmpremierein October,Caine announced his retirement, saying he’d gotten to do everything he wanted to: “I might as well leave with all this — what have I got to do to beat this?”

With two Oscars, a happy family life with wife Shakira Caine and many enduring roles to his name, it’s hard to argue with that assessment!

In 2024, a few months after marking his 91st 𝐛𝐢𝐫𝐭𝐡day, Caine revealed in August that he was releasing a nonfiction book in March 2025, featuring stories about the lessons he’s learned throughout his life and career.

“I’m always asked questions — by fans, by other actors and friends, by my grand𝘤𝘩𝘪𝘭𝘥ren. They want to know how I’ve lasted so long — how I handle fame – why I chose to do some of my films — which films and actors I like best and so forth,” Caine said in a statement shared with PEOPLE before adding, “I hope they’ll find Don’t Look Back, You’ll Trip Over: My Guide to Life helps them to be optimistic — and shows that anyone can blow the bloody doors off.”

Willie Nelson

The country icon celebrates his 𝐛𝐢𝐫𝐭𝐡day two days a year on April 29 and 30.

“I was 𝐛𝐨𝐫𝐧 before midnight on the 29th, but it didn’t get registered in the county courthouse until the next day, the 30th,” Nelson explained on his SiriusXM radio show in 2018. “So it went out officially as the 30th. I just do both days.”

For his 90th 𝐛𝐢𝐫𝐭𝐡day in 2023, he threw an epic, two-day concert with nearly 36,000 fans, with musical tributes from friends ranging from Snoop Dogg to Miranda Lambert.

“I never thought I’d get here,” Nelson told PEOPLE ahead of the event, crediting performing to his longevity.

He added, “I get a lot of fun out of playing for an audience. There’s a great energy exchange there. It’s what keeps me going.”

William Shatner

William Shatner celebrated entering his 90s on March 22, 2021, by joking on X (formerly Twitter): “Well! I must say that the reaction to a 90th 𝐛𝐢𝐫𝐭𝐡day is overwhelming. Don’t you people have better things to do?”

In October 2021, the Star Trek actor with the iconic voice made history when he traveled on Jeff Bezos’ Blue Origin space shuttle, becoming the oldest living person to go into space.

Upon turning 93 in 2024, Shatner shared his secret to staying “energetic” at his age.

“Just staying engaged in life, to stay curious. But the luck has a lot to do with it in your health,” Shatner told PEOPLE. “Your life’s energy, the soul energy of your body, is a product of health. If you’re sick, you can’t be energetic. You’re dying. So my luck has been, I’ve been healthy all my life.”

Robert Duvall

“I don’t know if I love any of it,” actor Robert Duvall joked to PEOPLE about being in his 90s, a milestone he reached on Jan. 5, 2021.

The Oscar winner — known for roles in 1972’s The Godfather and 1979’s Apocalypse Now — has continued to work in Hollywood, attributing his longevity to his marriage to fourth wife Luciana Pedraza.

“She takes care of me, and I have good friends and try to work out and keep in some kind of shape,” Duvall told PEOPLE.

Dick Van Dyke

A beloved actor and comedian, Dick Van Dyke charmed audiences for decades on The Dick Van Dyke Show and in films like Mary Poppins (1964), Chitty Chitty Bang Bang (1968) and Night at the Museum (2006).

In his cameo in the 2018 film Mary Poppins Returns, Van Dyke showed that he hasn’t aged a day since he starred in the original. (This was also evident in a flash mob thrown for his 90th on Dec. 13, 2015.)

Days after his 98th 𝐛𝐢𝐫𝐭𝐡day in 2023, CBS aired the two-hour special Dick Van Dyke 98 Years of Magic on Dec. 21 in his honor.

“I started with CBS under contract in 1955 with the CBS morning show, then The Dick Van Dyke Show and Diagnosis Murder,” Van Dyke said in a statement. “I’ve been with the CBS family for almost 70 years, and I couldn’t be prouder.”

He added, “I’m incredibly honored that CBS will be throwing a 98th 𝐛𝐢𝐫𝐭𝐡day special for me. Can’t wait to be part of the show!”

So what’s Van Dyke’s secret to such a long and joyful life?

“Having a beautiful young wife half my age to take care of me,” he joked of Arlene Silver, whom he married in 2012.

Clint Eastwood

Prolific actor and director Clint Eastwood turned 94 on May 31, 2024.

In 2023, actor Chris Messina talked about working with the Oscar winner on the upcoming Eastwood-directed film Juror No. 2.

“He was awesome. I really loved him,” Messina said. “Ninety-three years old and completely with it, great notes, up on his feet behind the camera. He’s a badass.”

Eastwood has continued to direct and occasionally star in films, including The Mule (2018), Richard Jewell (2019)and Cry Macho (2021).

Kim Novak

Herbert Dorfman/Corbis via Getty; Sonia Recchia/WireImage

Like Hedren, Kim Novak (who turned 91 in 2024) was one of the “Hitchcock blondes,” known for her role in 1958’s Vertigo. She left Hollywood behind more than half a century ago to pursue an art career, but her performances in the films of the 1950s continue to be some of the most talked-about in history.

“What’s wonderful is sometimes movies get less appreciated later and people get less appreciated,” she told PEOPLE in 2023. “But with me, it’s worked the opposite. I’m so grateful because I’ve become more respected as an actress … I think that the style is more appreciated, and so my life has grown richer the longer I’ve been around on this earth.”

Previously, she told PEOPLE in 2021, “I don’t keep track of the time. If I did, I’d be an old lady, and I’m not an old lady. I’m still riding my horse. I stay as healthy as I can.”

Eva Marie Saint

Actress Eva Marie Saint is the oldest living winner of an Academy Award and the star of acclaimed films such as On the Waterfront (1954) and North by Northwest (1959).

On July 4, 2024, she celebrated her 100th 𝐛𝐢𝐫𝐭𝐡day with four generations of family members.

“I’m looking forward to spending my 100th 𝐛𝐢𝐫𝐭𝐡day in Los Angeles with my dear, dear family. Four generations of family members will be gathering together from Los Angeles, Chicago, Santa Barbara and San Francisco,” Saint told PEOPLE. “I certainly don’t feel 100 years old. I continue to take walks out in the fresh air, like watching baseball — especially the Los Angeles Dodgers, and enjoy time with my family and friends. A good life.”

Mel Brooks

Iconic funnyman and EGOT recipient Mel Brooks — who has had blockbuster success on TV, films and Broadway — has shown absolutely no signs of slowing down since his 90th 𝐛𝐢𝐫𝐭𝐡day in 2016. In fact, he released a memoir, All About Me!, in 2021 before writing and executive producing the sequel series A History of the World, Part II for Hulu and receiving an Honorary Academy Award in 2024.