Mary-Kate Olsen

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Mary-Kate Olsen Trivia

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  • Trivia

    • Mary-Kate's birth name was Mary Kate Olsen. Since she was the youngest child at the time, her parents called her sister Ashley (rather than Ashley Fuller) and Mary-Kate by her first and middle names. Because she is so well known by "Mary Kate," her name is hyphenated to be "Mary-Kate."

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