Neil Patrick Harris appeared Thursday night on Late Show with David Letterman. He spent a fair amount of time gushing about his adorable 8-month old twins Gideon and Harper.
The actor and his partner David Burtka have started dressing the kids up in holiday-themed costumes for photo sessions. He explained: "We take one picture a month. We're doing a calendar, so that when they're older, we can humiliate them."
The How I Met Your Mother actor brought along the first three images to share with the audience: a St. Patrick's Day leprechaun inspired pose, an Easter bunny pic and a festive Cinco de Mayo scene, featuring one twin sporting a mustache and the other a unibrow.
Letterman got a big laugh when he pointed out the obvious: "You know that babies are more than party props?"
NPH feigned confusion: "Are they? You, mean, you don't dress up your son Harry in funny outfits?"
Check out more pics and the video below: