When an actor chooses a role, it's expected they commit. These 22 actors and actresses didn't just commit, they transformed into their role to become exact replicas. 

 

1. Ghandi Vs. Ben Kingsley

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2. Katharine Hepburn Vs. Cate Blanchett

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3. Aileen Wuornos Vs. Charlize Theron

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4. James Hunt Vs. Chris Hemsworth

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5. Idi Amin Vs. Forest Whitaker

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6. Édith Piaf Vs. Marion Cotillard

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7. Princess Diana Vs. Naomi Watts

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8. Truman Capote Vs. Philip Seymour Hoffman

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9. Harvey Milk Vs. Sean Penn

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10. Marilyn Monroe Vs. Michelle Williams

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11. Margaret Thatcher Vs. Meryl Streep 

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12. Nelson Mandela Vs. Morgan Freeman

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13. Ray Charles Vs. Jamie Foxx

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14. Muhammad Ali Vs. Will Smith 

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15. Malcom X Vs. Denzel Washington 

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16. Queen Elizabeth II Vs. Helen Mirren

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17. Bob Dylan Vs. Cate Blanchett

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18. Abraham Lincoln Vs. Daniel Day-Lewis

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19. Joan Jett Vs. Kristen Stewart

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20. Sarah Palin Vs. Julianne Moore

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21. John F. Kennedy Vs. Greg Kinnear

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22. Charlie Chaplin Vs. Robert Downey Jr. 

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