Alyson Hannigan PSP Wallpaper Description:

Alyson Lee Denisof, known professionally as Alyson Hannigan, is an American actress. She is best known for her roles as Lily Aldrin on the CBS sitcom How I Met Your Mother, Willow Rosenberg on the television series Buffy the Vampire Slayer, and Michelle Flaherty in three American Pie films.

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