Wikisimpsons - The Simpsons Wiki
- This article is about the character. For the guest star, see Mary-Kate Olsen.
| Mary-Kate Olsen
| Character Information
Mary-Kate Olsen is an American actress. She is the twin sister of Ashley Olsen.
- Comic story – Clone Alone (mentioned)
- Comic story – Halloween Hoodoo! (Sherri Mackleberry dressing up as Mary-Kate)
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The Simpsons characters