Related: Alyson Hannigan Is Embracing the 'Roller Coaster' of Back-to-School Season: 'Here We Go Again' (Exclusive) Later that day, Hannigan and Keeva took their seats at the final show of Swift's ...

It's Now a Fan Event (Exclusive) Alyson Hannigan's Daughter Keeva Looks Just Like Mom in Rare Snaps Alongside Jenn Tran and Sasha Farber: 'Favorite People' Alyson Hannigan Has a Clever Idea for a ...

Celebrities - they're just like us! Alyson Hannigan stayed up to listen to Taylor Swift's newest album, The Tortured Poets ...

Sarah Michelle Gellar and Alyson Hannigan chatted with ET on set of the 'Buffy the Vampire Slayer' episode, 'The Prom,’ in 1999. The 'How I Met Your Mother' star is proud of her success.