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Alyson Hannigan

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  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
  • Alyson Hannigan - Celebrity School Pic
Alyson Lee Hannigan is an American actress. She is known for her roles as Lily Aldrin on the CBS sitcom How I Met Your Mother, Michelle Flaherty in four American Pie films, and Willow Rosenberg in the television series Buffy the Vampire Slayer.