Alyson Hannigan is an American actress born on March 24, 1974 in Washington, D.C. She made her film debut in My Stepmother is an Alien and she is best known for her roles as Willow in the television series Buffy the Vampire Slayer, Michelle in the American Pie film series and Lily in the sitcom How I Met Your Mother.

There are many rumors that Alyson has had some plastic surgery done because she looks a lot different from her first TV appearances.

Those changes could be caused by facelift and botox injections or just beauty treatments and good makeup. There are also speculations that Alyson had boob job and nose job done in her early age.

I believe that the difference between Alyson Hannigan’s before and after photos is product of her aging and not cosmetic procedures. But rumors of her plastic surgery are still out there.

Look at these Alyson Hannigan pictures and give us your opinion. What do you think has she had some plastic surgery?