Alyson Lee Hannigan (born March 24, 1974) is an American actress. She is best known for her roles as Willow Rosenberg in the television series Buffy the Vampire Slayer (1997–2003), Lily Aldrin on the CBS sitcom How I Met Your Mother (2005–2014) and Michelle Flaherty in the American Pie film series (1999–2012).
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in Buffy the Vampire Slayer
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- Alyson Hannigan in Buffy the Vampire Slayer
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- Alyson Hannigan in Buffy the Vampire Slayer
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- Alyson Hannigan in American Pie 2
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- Alyson Hannigan in American Pie 2
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in How I Met Your Mother
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- Alyson Hannigan in MTV Movie Awards
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- Alyson Hannigan in MTV Movie Awards
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- Alyson Hannigan in MTV Movie Awards
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- Alyson Hannigan in MTV Movie Awards
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- Alyson Hannigan in MTV Movie Awards
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- Alyson Hannigan in Star Hayley Wagner
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- Alyson Hannigan in American Pie 2
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- Alyson Hannigan in American Pie 2
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- Alyson Hannigan in American Pie 2
