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Alyson Hannigan rose to fame playing Willow on the 1990s series 'Buffy The Vampire Slayer,' which ended in 2003. She played Jim Levenstein's girlfriend-turned-wife Michelle Flaherty in four major 'American Pie' films, including the last one - 'American Reunion,' which came out in 2012.
In 2005, she had a recurring part on the series 'Veronica Mars,' appeared in the 2006 film 'Date Movie' and began starring in the CBS sitcom 'How I Met Your Mother.'
In October 2003, Hannigan married actor Alexis Denisof, who later played Sandy on 'How I Met Your Mother.' They are parents to two daughters.
(Pictured: Alyson Hannigan appears in a scene from 'American Pie 2' in 2001. / Alyson Hannigan appears with husband Alexis Denisof at The Hollywood Reporter's 22nd annual Women In Entertainment Breakfast honoring Oprah Winfrey at the Beverly Hills hotel in Beverly Hills, California on Dec. 11, 2013.)
( Photo / Universal Pictures / Lionel Hahn / AbacaUSA / Startraksphoto.com)