Russell Crowe's Latest Look Has Us Certifiably Shook

Plus other stars that have undergone massive movie makeovers.

With a balding head of grey hair, walking stick and his physique noticeably more stout, Rusty stepped onto the streets of New York looking a far cry from his buff Gladiator days in a photo snapped by People.

Not to worry, though -- it's just his latest transformation into late Fox News chief Roger Ailes, who Crowe is set to portray in Showtime's upcoming series.

For those who aren't in the loop with the latest happenings in US media, Ailes abruptly quit his high-ranking role in 2016 after multiple sexual harassment allegations were made against him. However, he died 10 months later aged 77 after fall in his bathroom led to a serious head injury.

With the series slated to premiere next year, it'll also star Naomi Watts, Sienna Miller, Seth MacFarlane, and Simon McBurney.

With the 54-year-old using the magic of prosthetics and makeup to transform into the former exec, we thought we'd take a look at some of the other extreme looks stars have adopted for iconic film roles.

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Charlize Theron In Monster

Image: Getty/Newmarket Films

When it came to portraying serial killer and former prostitute Aileen Wuornos -- who was executed in Florida in 2002 for murdering six men -- the usually-glam Theron underwent a drastic makeunder which included gaining weight, as well as masking her face with makeup and prosthetic teeth.

"I think I've tried most of my career to transform myself into characters. This was just more extreme," she's previously said about the role. "I had about three months to gain weight. We never discussed it like, 'I'm gonna put on 30 pounds,' because I wasn't trying to look fat. It wasn't that hard. I just didn't say 'no' to Krispy Kreme doughnuts or anything that was full of cream. I also gave up exercising."

Christian Bale In The Machinist

Image: Getty

One of Hollywood's more drastic transformations, Bale literally starved himself for the role of Trevor Reznik in the 2004 film.

"It's an amazing experience doing that. When you're so skinny that you can hardly walk up a flight of stairs ... you're, like, this being of pure thought. It's like you've abandoned your body," he told The Guardian.

"That's the most Zen-like state I've ever been in my life. Two hours sleep, reading a book for 10 hours straight without stopping ... unbelievable. You couldn't rile me up. No rollercoaster of emotions. As soon as you start putting the food back in your stomach, the rollercoaster comes back."

Matthew McConaughey in Dallas Buyers Club

Image: Getty/Focus Features

While his role as an AIDS patient in Dallas Buyers Club earned him an Oscar, McConaughey revealed his drastic weight loss came with several side effects.

"As soon as I hit 143lb [64kg], I started losing my eyesight," he said. "You have to re-programme all of your habits, and the days get so long. You think it must be lunchtime already, and it's only 9.30 in the morning."

Rooney Mara In The Girl With The Dragon Tattoo

Image: Getty/Sony

For her role as Lisbeth Salander in The Girl With The Dragon Tattoo, Mara shaved her head, bleached her eyebrows, got several piercings and lost weight.

"The eyebrows were the biggest shock because that really changed my face, and I didn't recognise myself," she told Vogue. "But I was fine because I knew it was going to be really helpful for getting into character.

Chris Pratt In Guardians Of The Galaxy

Image: Getty/Disney

We originally knew him as the rounder Andy Dwyer from Parks and Rec, but Chris Pratt has since buffed up significantly for blockbuster roles.

"I actually lost weight by eating more food, but eating the right food, eating healthy foods, and so when I was done with the movie my body hadn't been in starvation mode," Pratt told People magazine.

"It wasn't like I was triggered to just gorge myself and get really fat again."

Renee Zellweger In Bridget Jones' Diary

Image: Getty/Universal Pictures

Renee famously packed on the pounds for her role as Bridget Jones, a feat the petite star claims wasn't easy.

"I had a panic attack with all the specialists talking about how bad this is for you long-term, putting on that much weight in short periods of time," she told That's Fit.

50 Cent In All Things Fall Apart

Image: Getty/Twitter

Reportedly undertaking a strict diet of liquids and running three hours a day, 50 went from 97kg to 72kg in just nine weeks to play a cancer-stricken football player. “I was starving,” he told Us Weekly.

“The weight started coming off and my manager told me, 'You better get yourself to a doctor!' I just didn't want to go because I had to match the look in my mind. I was so into what I was doing that I wasn't really concerned with that,” the star admitted.

Natalie Portman And Mila Kunis In Black Swan

Image: Getty/Fox Searchlight

Mila and Natalie famously undertook a gruelling diet and exercise routine in order to play ballerinas in Black Swan. 

Speaking to Howard Stern on his SiriusXM show, Mila said of the slim down,

"I never watched what I ate [before]. It was one of those things, for the first time in my life, I got a food delivery service," she recalls. "And I'll tell you this -- I'm not promoting this at all -- but I used to be a smoker, and so I smoked a lot of cigarettes and I ate a limited amount of calories."

"Twelve-hundred calories and I smoked," she reiterates about her weight-loss methods. "I don't advocate this at all. It was awful."

Image: Getty