Yunjin Kim (Sun) tried out for the part of Kate. She obviously didn't get the part, but impressed the producers so much that they wrote a part specifically for her.
Source: Lost: The Complete First Season DVD
Go to: Lost Trivia Fact 20
Yunjin Kim (Sun) tried out for the part of Kate. She obviously didn't get the part, but impressed the producers so much that they wrote a part specifically for her.
Source: Lost: The Complete First Season DVD
Go to: Lost Trivia Fact 20