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Mary-Kate Olsen

Wikisimpsons - The Simpsons Wiki
This article is about the character. For the guest star, see Mary-Kate Olsen.
Mary-Kate Olsen
Mary-Kate and Ashley Olsen.png
Character Information
Female ♀
Hair: Blonde
Occupation: Actress
Relatives: Sister: Ashley Olsen
First appearance: "Diatribe of a Mad Housewife"
Voiced by: Herself

Mary-Kate Olsen is an American actress. She is the twin sister of Ashley Olsen.


Mary-Kate and Ashley Olsen read the audiobook version of The Harpooned Heart. When one of them would finish their part, they would tell their sister to take it from there.[1]

Milhouse read the book Bye-Bye Boyfriend by Mary-Kate and Ashley. On the cover of the book, Mary-Kate and Ashley had left their boyfriends behind and were driving away. Milhouse said that sometimes he felt like the third Olsen twin since he had read all their books.[2]