caption years_active children birth_place name birth_date spouse image article_title birth_name occupation alma_mater
hannigan at the phoenix comicon , may 2015 1986 -- present 2 washington , d.c. , u.s. alyson hannigan 24 march 1974 alexis denisof 2003 alyson hannigan may 2015.jpg alyson hannigan
 alyson lee hannigan actress california state university , northridge
alyson hannigan

alyson lee hannigan -lrb- born march 24 , 1974 -rrb- is an american actress .
she is best known for her roles as willow rosenberg in the television series `` buffy the vampire slayer '' -lrb- 1997 -- 2003 -rrb- , lily aldrin on the cbs sitcom `` how i met your mother '' -lrb- 2005 -- 2014 -rrb- and michelle flaherty in the `` american pie '' film series -lrb- 1999 -- 2012 -rrb- .
