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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 three major 'American Pie' films, including the last one - 'American Wedding' in 2003.
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.' The two welcomed daughter Satyana on March 24, 2009 - Hannigan's birthday.
(Pictured: Alyson Hannigan appears in a scene from 'American Pie 2' in 2001. / Alyson Hannigan appears in a scene from the show 'How I Met Your Mother.')
( Photo / Universal Pictures / CBS)