How I Met Your Mother star Alyson, husband Alexis Denisof and daughters Keeva and Santana embraced a very Irish theme for the holiday on 31 October.
Alyson and Alexis dressed as leprechauns, while one-year-old Keeva was a pot of gold and four-year-old Santana embodied the whole pot of gold being found at the end of a rainbow legend.
Alyson admitted last week that creating the costumes was turning out to be rather time-consuming and expensive, tweeting" Why is the costume I'm MAKING costing me so much money?!? I'm not even charging myself for labour! #thingswedoforourkids."
Gorgeous, talented, hunky husband, beautiful kids and a dab hand at sewing? Is there anything Alyson can't do?!
(FYI, if you didn't see the Hannigan-Denisof family Halloween costumes last year, then check out the pictures here.)
Alyson and Alexis met on the set of Buffy The Vampire Slayer when Alyson starred as Willow and Alexis played watcher Wesley.
They marred in October 2003 in a three-day celebration in California and announced earlier this year they would be renewing their vows to mark a decade of marriage.