![Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Greatest-Transformations_2075fb.jpg?crop=0px%2C0px%2C1998px%2C1133px&resize=940%2C529&quality=86&strip=all)
Getty Images; WireImage; Inset: Paramount/Miramax; MovieStillsDB/Paramount Pictures
Onscreen Transformations! Nicole Kidman, Brad Pitt and More Stars Who Looked Unrecognizable for a Role
Some actors will do whatever it takes to get into a character, whether it means gaining or losing weight or spending hours having prosthetics applied. These 10 stars disappeared into their roles in Hollywood’s greatest transformations.
![Nicole Kidman Hours Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Nicole-Kidman-Hours-Greatest-Transformations.jpg?fit=800%2C628&quality=86&strip=all)
Paramount/Miramax; Inset: PA Images/INSTARimages
![Brad Pitt The Curious Case of Benjamin Button Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Brad-Pitt-The-Curious-Case-of-Benjamin-Button-Greatest-Transformations.jpg?fit=800%2C581&quality=86&strip=all)
MovieStillsDB/Paramount Pictures; Inset: Doug Peters/PA Images/INSTARimag/Cover Images
![Charlize Theron Monster Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Charlize-Theron-Monster-Greatest-Transformations.jpg?fit=800%2C500&quality=86&strip=all)
Newmarket Films; Inset: Karwai Tang/WireImage
![Christian Bale Vice Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Christian-Bale-Vice-Greatest-Transformations.jpg?fit=800%2C716&quality=86&strip=all)
Annapurna Pictures; Inset: Getty Images
![Renee Zellweger Judy Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Renee-Zellweger-Judy-Greatest-Transformations.jpg?fit=800%2C400&quality=86&strip=all)
Cover Images; Inset: WireImage
![Matthew McConaughey Dallas Buyers Club Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Matthew-McConaughey-Dallas-Buyers-Club-Greatest-Transformations.jpg?fit=800%2C844&quality=86&strip=all)
MovieStillsDB/Focus Features; Inset: Getty Images
![Tilda Swinton Trainwreck Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Tilda-Swinton-Trainwreck-Greatest-Transformations.jpg?fit=800%2C712&quality=86&strip=all)
MovieStillsDB/Universal Pictures; Inset: Getty Images
![Jared Leto House of Gucci Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Jared-Leto-House-of-Gucci-Greatest-Transformations.jpg?fit=800%2C641&quality=86&strip=all)
Cover Video International; Inset: WireImage
![Marion Cotillard La Vie en Rose Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Marion-Cotillard-La-Vie-en-Rose-Greatest-Transformations.jpg?fit=800%2C1197&quality=86&strip=all)
Legende / Tfi International; Inset: Laurent Zabulon/ABACA/INSTARimages.com/Cover Images
![Rooney Mara The Girl With the Dragon Tattoo Greatest Transformations](https://www.closerweekly.com/wp-content/uploads/2024/05/Rooney-Mara-The-Girl-With-the-Dragon-Tattoo-Greatest-Transformations.jpg?fit=800%2C523&quality=86&strip=all)
MGM; Inset: FilmMagic