Which celebrities had milestone birthdays in 2016?

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As we say goodbye to 2016, it's time to take note which of the world's big names celebrated landmark birthday celebrations. From Princess Charlotte turning 1, to a Hollywood legend hitting the big 1-0-0 (!), here's a look at famous names who hit milestone ages.
Photo: Getty Images

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TURNED 1 They've grown so fast! These celebrity infants are now entering their toddler years, and we can't wait for the adorable Instagram posts and updates to come. From left to right, Justin Timberlake and Jessica Biel's son Silas, William and Kate's little Princess Charlotte, and Jaime King and Kyle Newman's tot Leo Thames. Photos: Instagram, Getty Images

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TURNED 10 The spitting image of their parents as they get older, we can't believe these A-list kids are hitting their tweens already! From left to right, Gwen Stefani and Gavin Rossdale's son Kingston, Tom Cruise and Katie Holmes' little girl Suri and Angelina and Brad Pitt's mini-me Shiloh. Photo: Getty Images

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TURNED 20 These stars left their teen years behind and started the countdown to the landmark age of 21. Although they're just getting started, this group of young adults have already reached success. From left to right, Hailee Steinfeld, Lorde and Zendaya. Photo: Getty Images

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TURNED 30 It was time to hit the big 3-0 for some of our fave stars who spent their 20s building their careers in the limelight. What could be in store over the next decade? From left to right, Lady Gaga, Amber Heard, Robert Pattinson, Emilia Clarke. Other notable birthdays: Megan Fox, Sam Claflin and Mary-Kate and Ashley Olsen. Photo: Getty Images

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TURNED 40 These stars are looking better than ever as they wave goodbye to their 30s and say hello to the Fabulous 40s. From left to right, Reese Witherspoon, Blake Shelton and Princess Marie of Denmark. Other notable birthdays: Freddie Prinze, Jr. and Ryan Reynolds.

Photo: Getty Images

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TURNED 50 Not only are they proving that 50 is the new 30, these stars are staying at the top of their game and looking flawless while doing it. From left to right, Halle Berry, Cindy Crawford, Salma Hayek and Janet Jackson. Other notable birthdays: Adam Sandler, Patrick Dempsey and Julianna Margulies.

Photo: Getty Images

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TURNED 60 These legends have shown that they have staying power – with track records like theirs, who knows what amazing accomplishments they'll surprise us with next! From left to right, Tom Hanks, Carrie Fisher and Bryan Cranston Photo: Getty Images

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TURNED 70 Millennials? What millennials? These baby boomer icons born in 1946 continue to steal the show, and it seems there's no slowing them down. From left to right, Diane Keaton, Donald Trump and Cher. Other notable birthdays: Sylvester Stallone, Bill Clinton and George W. Bush Photo: Getty Images

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TURNED 80 Birthday boy Robert Redford, seen with his 'The Way We Were' co-star Barbra Streisand, 73, is just one of the Hollywood icons who have been entertaining for generations, and are just as beloved as they start their next decade. Other notables: Burt Reynolds and Mary Tyler Moore

Photo: Getty Images

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TURNED 90 Forever young! Led by Queen Elizabeth, this group knows a thing or two about eternal youth, dedication to your career and living life to the fullest - if only they'd reveal their secrets! Other notables: Tony Bennett and Hugh Hefner Photo: Getty Images

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TURNED 100 Hollywood great Kirk Douglas had the most special birthday of all! Born in New York in 1916, actor Michael Douglas' dad made his screen debut at the age of 30 - and with his career spanning more than 60 films, including classics like 'Spartacus,' he has earned a place in our hearts as well as Hollywood history. Photo: Getty Images