Link copied Sign up for FREE health tips to live a long and happy life SUBSCRIBE Invalid email When you subscribe we will use the information you provide to send you these newsletters. Sometimes they'll include recommendations for other related newsletters or services we offer. Our Privacy Notice explains more about how we use your data, and your rights. You can unsubscribe at any time. Alyson Hannigan is an American actress and presenter who fans will recognise from Buffy The Vampire Slayer, American Pie and How I Met Your Mother. The 46-year-old actress began her acting career in 1986, in the film Impure Thoughts, and she has since gone on to become an award-winning global star. Express.co.uk has all you need to know about Hannigan's net worth.