Hollywood actors will do anything to look young, but in some cases, actors have to undertake gruelling makeovers to achieve the look of someone older, and thanks to prosthetics and makeup artists, they are often unrecognizable.
Here are 10 hot actors who underwent drastic makeovers for their roles.
1. Leonardo Dicaprio
While his roles often lead to critical acclaim and strong box office revenues, Leonardo Dicaprio proved he was human after all when he appeared in a movie that was subpar at best.
That role came in J.Edgar, a biopic of the famed American detective and first director of the Federal Bureau of Investigation. As the film was mostly about his later life, Leo had to do away with his Hollywood good looks and adopt the appearance of a man well into his 70s.
2. Brad Pitt
Much like Leonardo DiCaprio, Brad Pitt has played the role of the heartthrob for most of his career having been blessed with natural, leading man looks. However, Pitt's pretty boy looks weren't as apparent in the earlier stages of the David Fincher movie, The Curious Case of Benjamin Button.
An adaptation of the F.Scott Fitzgerald short story, Pitt's character suffers from a condition that sees the ageing process reversed, meaning his looks gradually enhance over time.
3. Charlize Theron
While Charlize Theron's transformation in the hard-hitting murder drama, Monster didn't require her to age considerably, she still had to look older than her years, but most importantly, lose her flawless figure and pile on the pounds.
Theron really went all out to gain 30 pounds for her role as she ate whole boxes of donuts and always had a bag of chips on hand. It did, however, win her an Oscar for the role of a prostitute-turned murderer where she was barely recognizable on screen.
4. James Dean
The iconic movie star James Dean was a stud for the entirety of his short-lived career in Hollywood, but the star, who passed away aged just 24, was far from your average hunk.
While his handsome, chiselled features no doubt helped his career, the Rebel Without A Cause star was a natural at his craft, and he proved that in lesser-known films like Giant, where he played a silver fox businessman.
5. Alicia Silverstone
Alicia Silverstone is a natural beauty who has graced screens in the well-known movies Clueless, Batman and Robin and Crush, but she sported a look of a different kind in the 2012 comedy, Vamps.
Undergoing a long stint in the make-up and prosthetics chair, Silverstone's character was unrecognizable, though the flimsy hair didn't exactly fit the face.
6. Dustin Hoffman
Dustin Hoffman isn't the spring chicken he once was, but he still had to undergo a dramatic ageing transformation for his role in Little Big Man.
Hoffman's senior look in the movie was the work of legendary make-up artist Dick Smith, who also did David Bowie's make-up in the film Hunger.
7. Kate Winslet
The Academy Award winner is considered one the finest actors of her generation, and she cemented such reputation after a spellbinding performance as an imprisoned Nazi prison guard in The Reader.
Apparently, it took on-set make-up artists nearly seven-and-a-half hours to get Winslet camera-ready.
8. Drew Barrymore
Drew Barrymore is a beautiful actress but she rid herself of all forms of vanity when she signed up to Charlie's Angel: Full Throttle.
While she was her gorgeous self for the majority of the movie, one scene sees her character imagine her future with Charlie and that she will one day be replaced by younger Angels.
Sadly, we couldn't find any images of an old Barrymore online, so you'll have to make do with a kick-ass screengrab.
9. Michelle Pfeiffer
The gorgeous blonde has long been considered the most beautiful actress of all time, so much so that the Australian indie band Vance Joy compared their beautiful muse to her in their hit song Riptide.
For Pheiffer, however, she has long been a staple fixture on our screens, though her traditional beauty was transformed into an ancient old hag in the Ian McKellen narrated movie, Stardust.
10. Tilda Swinton
Tilda Swinton's make-up for her character Madame Celine Villeneuve Desgoffe und Taxis in The Grand Budapest Hotel was so good most people failed to notice it was ever her.
Unsurpinsgly, the Wes Anderson movie won the Oscar for Best Makeup and Hairstyling, which unlike most Academy Award wins, was well-deserved.