At the 2025 Venice Film Festival, Dwayne “The Rock” Johnson unveiled a striking new, leaner physique. He slimmed down from 300 pounds (about 136 kg) to nearly 240 pounds (about 109 kg) for his role in the new film 'The Smashing Machine.' That's about 60 pounds (27 kg) gone!
The transformation went viral, with fans calling him “The Pebble.” Johnson described the change as a deeply personal evolution, saying “I was hungry to do this.”
Indeed, there are numerous cases in Hollywood where actors had to gain or lose weight while filming. Check out this gallery to see which stars had to undergo drastic changes for movie roles.