Vin Diesel with hair! Vin Diesel not only had to gain weight to be able to play "Jackie DiNorscio" in the film Find Me Guilty, the bald pretty boy also had to wear a wig.
Christian Bale appears two times in our gallery, as he is the king of transformations! For his role in the film The Fighter (2010), he lost almost 40 pounds. But, the dieting was worth it, he won a Golden Globe and an Oscar for his performance!
Matthew McConaughey usually graces our screens as a ripped, blonde surfer-dude. However, he lost 40 pounds to play "Ron Woodroof" in Dallas Buyers Club (2013). He won a Golden Globe and an Oscar for the role.
This scary lady is actually Mariah Carey! The glamorous singer showed a completely different side of herself when she played the ugly social worker "Mrs. Weiss" in the film Precious in 2010.
Tom Hanks had to go on an extreme diet for his role in Cast Away. The actor lost a whopping 44 pounds!
This old man is actually Brad Pitt. Brad Pitt had to undergo several transformations as "Benjamin" in The Curious Case of Benjamin Button. He won an Oscar for his role.
Dreadlocks, gold teeth and Hawaii shirts are all part of "Alien's" look. James Franco had to transform his handsome face into that of a drug addict for the 2013 film Spring Breakers. The make-up artist did a sensational job!
Jared Leto has a lot in common with Matthew McConaughey. Both starred in Dallas Buyers Club (2013) and both had to lose a lot of weight. Leto lost 35 pounds, but was rewarded with an Oscar for all his hard work!
Who is this? It's Nicole Kidman! Kidman had to spend many hours in hair and make up to look this creepy for her role as "Virginia Woolf" in the film The Hours. She won the Oscar for Best Actress in 2003 for her performance.
Liam Neeson lost 20 pounds for his part in the film Silence. Our next Hollywood star lost twice that!
Bradley Cooper had to pack on 40 pounds of muscle and mass in just ten weeks before he was ready for his role in the film American Sniper (2014). Sadly, he did not win an Oscar.
Mila Kunis lost 20 pounds to play a ballet dancer in the 2011 film Black Swan. She was nominated for an Oscar for her performance, but sadly did not win one.
Yes, as unbelievable as it seems, this really is Charlize Theron! So as to be able to authentically portray the murderer "Aileen Wuornos" in Monster the actresses face had to be changed dramatically. The hard work was worth it though, and Charlize won an Oscar for Best Actress for her performance.
Dirty teeth and greasy hair: not a look that one usually associates with Leonardo DiCaprio. He played the rich and truly evil "Calvin Candie" in Django Unchained and so had to look as horrible as his character was.
A beer belly and flip flops? We had to look at this photo twice before we realized it was Christian Bale. Bale had to gain a significant amount of weight to play "Irving Rosefeld" in American Hustle. He won an Oscar for his performance as "Irving" in 2016.
This chubby lady is actually Gwyneth Paltrow. The otherwise health-conscious actress played "Rosemary" in the comedy Shallow Hal.