Alyson Lee Hannigan (born March 24, 1974) is an American actress and
television presenter. She is best known for her roles as Willow
Rosenberg in the television series Buffy the Vampire Slayer
(1997â€"2003), Lily Aldrin in the sitcom How I Met Your Mother
(2005â€"2014) for which she won a People's Choice Award in 2009, and
Michelle Flaherty in the American Pie film series (1999â€"2012). Since
2016, Hannigan has presented the television show Penn & Teller: Fool
Us. She also provides the voice of Claire Clancy in the Disney Junior
animated series Fancy Nancy (2018â€"present).Hannigan was born in
Washington, D.C., the only child of Emilie (Posner) Haas, a
real-estate agent, and Alan Hannigan, a Teamsters trucker. Her father
is of Irish ancestry and her mother is Jewish.At age four, Hannigan
began appearing in commercials. She moved to Hollywood at age 11.
television presenter. She is best known for her roles as Willow
Rosenberg in the television series Buffy the Vampire Slayer
(1997â€"2003), Lily Aldrin in the sitcom How I Met Your Mother
(2005â€"2014) for which she won a People's Choice Award in 2009, and
Michelle Flaherty in the American Pie film series (1999â€"2012). Since
2016, Hannigan has presented the television show Penn & Teller: Fool
Us. She also provides the voice of Claire Clancy in the Disney Junior
animated series Fancy Nancy (2018â€"present).Hannigan was born in
Washington, D.C., the only child of Emilie (Posner) Haas, a
real-estate agent, and Alan Hannigan, a Teamsters trucker. Her father
is of Irish ancestry and her mother is Jewish.At age four, Hannigan
began appearing in commercials. She moved to Hollywood at age 11.
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