Alyson Hannigan & Alexis Denisof: Seahorse Halloween Couple!

Alyson Hannigan and her husband Alexis Denisof dress up as seahorses while trick-or-treating on Wednesday (October 31) in Los Angeles.

The 38-year-old actress was joined by her adorable daughters Satyana and Keeva.

PHOTOS: Check out the latest pics of Alyson Hannigan

Earlier in the day, Alyson tweeted, “Happy Halloween!!! Or as I say in my house Happy cupcake day!!!”

It was recently announced that Alyson‘s Buffy The Vampire Slayer
co-star Seth Green is set to guest star on her hit show How I Met Your Mother as a guy named Daryl who thinks Lily (Hannigan) was his best friend in college.