19. Katy Perry
Didn't see that one coming either.
20. Kiefer Sutherland
Kiefer Sutherland has never been shy about his smoking habit.
21. Mischa Barton
Mischa Barton smokes cigarettes like it's her job. Which it sort of is ... what was the last thing she was in?
22. Kate Hudson
Kate Hudson is a smoker. No wonder she stays so thin.
23. Johnny Depp
Johnny Depp has never been shy about his smoking habit.
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