1. Jared Leto
When it comes to Hollywood Stars, the public has had a history of mis judging the ages of our their favorite celebrities. You'll be blown away when you see how old, or young,these stars really are.
Take a look through our list of 30 celebs whose ages you'd never be able to guess.
Jared Leto may look like he's in his late 20's but he's actually 45. Leto was recently seen with an outstanding performance at the 2017 MTV VMA's with his band Thirty Seconds to Mars.
2. Ariana Grande
It's rumored that he is working on a Joker & Harley Quinn spin-off of the Suicide Squad film where he and Margot Robbie will be reprising their roles.
Ariana seems like she might still be a teenager, but she's actually 24.
3. Thomas Brodie Sangster
Her most recent news was an unfortunate event as a terrorist attack occurred at her concert in Manchester, where she later gathered other artists to come together for a free concert just a few weeks later to help bring awareness to the incident.
Thomas Brodie Sangster is 27 years old. It was a shock to see his tragic end as Jojen on Game Of Thrones.
4. Tyson Beckford
We are all looking forward to seeing him reprise his character from Love Actually when the second film is released
Tyson Beckford is 46 despite looking like he's easily in his early thirties.
5. Margot Robbie
He is an American fashion model who is well known for being the face behind the Polo Ralph Lauren brand.
Could you believe Margot Robbie is 27 years old? She's in her prime right now as she's been the lead female actress in many recent movies including 'Suicide Squad' and 'The Legend of Tarzan'.
6. Kate Upton
Margot Robbie will soon be playing the role of Harley Quinn once again as she recently signed on for the Joker & Harley Quinn spinoff of 'Suicide Squad'.
It's hard to believe Kate Upton is only 25. She can be seen as the cover model on Sports Illustrated Swimsuit Edition.
7. Sam Smith
She recently appeared as a guest on the 'Tonight Show with Jimmy Fallon', 'Saturday Night Live', and 'Ellen'.
Sam Smith is just 25. This may come as a surprise to many as he's been an amazing performer with such a deep speaking voice and impressive singing voice.
8. Adele
For anyone that's seen him in an interview, he holds himself with class and professionalism which can really throw us off when given a chance to guess his age.
At just 29, not even a full year older than Taylor Swift, Adele's powerful songs had us all thinking she wasn't that young.
9. Paul Rudd
She certainly sings as if she has an old soul, and like she's been through lifetimes of heartbreak and pain.
We've seen Paul Rudd rock the Hollywood Box Office over the last 15 years like a champ. That wouldn't leave us with a clue as to how he looks exactly the same, not having aged a bit.
10. Jim Parsons
He is now 48 years old.
We all know Jim Parsons as our nerdy neighbor with "Bazinga" as a catchphrase from 'Big Bang Theory'.
11. Jennifer Lopez
His character has had us thinking he was in his thirties, but he's surprisingly 44 and hides it extremely well.
At 48, Jennifer Lopez looks better now than she did in 'Selena'. She's been making movies since 1995 and has been performing musically for even longer.
12. Gwen Stefani
It's hard to believe that she's been in the spotlight that long without aging a bit.
Gwen Stefani at 47 is a mother of 3 and we would've never known. She maintains such a young, fun personality and has always made music that connects with a younger crowd which has had all of us fooled.
13. Hayden Panettiere
She looks phenomenal for her age to say the least.
It's hard to believe that when we first saw Hayden Panettiere, she was only 15.
14. Jennifer Aniston
Now she's 28 and still crushing it on Nashville which just got picked up for its 6th season.
It's been a decade since Friends ended, and if time travel had been invented yet, she could go back and re-do the show just the way she looks because she doesn't look any older.
15. Lorde
She's now 48 years old and still hiding her fountain of youth.
16. Keanu Reeves
Lorde is just 20! You wouldn't think that considering all of her songs talk about things someone in their mid 20's should be experiencing, but she has us all fooled because she connects with her lyrics so well.
Now 53, Keanu Reeves still looks like he is just barely pushing 40.
17. Emma Stone
He's been in the Hollywood scene since the early 80's, and he's one of the celebrities that's gotten better with age.
18. Sandra Bullock
Emma Stone is 28, but she makes us all think she's much older than that, having a mature sense of humor and always showing everyone how kind she is.
If you can believe how fast time flies, 'Ms.
19. Sarah Hyland
Congeniality' premiered 14 years ago, and Sandra Bullock has had an impressive career in Hollywood, now at age 53.
In November, she'll be 26, meanwhile, the audience still can't believe how Modern Family has her in her college years now.
20. Samuel L. Jackson
Like Ariana Grande, Hyland looks like she's still a teenager in High School.
Samuel L. Jackson is one of the most beloved Hollywood actors of all time.
21. Robert Downey Jr.
That's no easy feat to overcome, but it's because he's been in so many blockbusters that we forget to stop and think about how long we've really been watching him on the big screen. He's now 68 years old with no signs of slowing down.
Robert Downey Jr. has aged like a fine wine, seeing as how he looks much better now than he did 15 or 20 years ago.
22. Halle Berry
It could be because he lives a clean lifestyle nowadays, but nevertheless, he looks amazing at 52.
Time may have flown by, but not for Halle Berry. She is 51 and still looks like she did in 'Swordfish' with John Travolta.
23. Elijah Wood
That's one of the many reasons she's still an idol in Hollywood, put on a pedestal by men as a dream woman and by women everywhere as a beauty icon.
Elijah Wood first stepped onto the Hollywood scene in the early 2000's but has always kept a youthful face. He is now 36 believe it or not.
24. Troian Bellisario
It's crazy to think about how fast he's grown since then, or maybe that was just the special effects in 'Lord Of The Rings'.
It's not uncommon in Hollywood to have older actors play high school and college students to give the characters depth and help provide a better story. Troian Bellisario is far beyond high school and college, now at 31 years old.
25. Alyson Hannigan
She looks like she may be a college student, but one of her best qualities is how mature and professional she is, with a very bright future in front of her now that 'Pretty Little Liars' has finished its long run.
Alyson Hannigan has always had a young looking face but believe it or not, she's 43 now.
26. Johnny Depp
It seems like yesterday, American Pie was just released, when she co-starred as the nerdy tutor turned kinky girlfriend, Michelle.
Johnny Depp can't exactly play a teenager anymore, but he's remained a Hollywood heartthrob for many with his charm and devilishly handsome style.
27. Jason Statham
He still looks great for 54.
Jason Statham doesn't seem to want to age a bit. He's actually 50 if we're really counting, but it doesn't look like he is and neither is the rest of his body.
28. Vin Diesel
He's remained extremely active and is more in shape than the rest of us, that's for sure.
It seems that when celebrities are bald, it really throws our age-o-meter off more than expected.
29. Sofia Vergara
Vin Diesel is still going full force with his action movie career, finishing up the Fast and Furious franchise strong at 50 years old.
We can all hope to look as good as Sofia Vergara does at 45, but that's probably unlikely. She's an international icon of beauty and a sex-symbol for quite a while, with no signs of aging.
If anyone had to guess, she looks like she's in her late 30's at most but definitely not 45.