Neil Patrick Harris has appeared on The Late Show with David Letterman in New York and cooed over his twins, showcasing some family snaps.

The How I Met Your Mother actor confessed that his twins love dressing up for holidays and gave a few examples of their matching outfits. One picture shows the twins, Gideon and Harper, dressed as bunnies, while the other shows them as happy-go-lucky leprechauns.

Harris (37) and his 35-year-old partner, David Burtka, conceived the twins via surrogate last year and said that “'they are the most fantastic kids, we have been blessed with two perfect little angels”.

Earlier, he doted about his kids on chat show The View, adding that the family have had playdates with Zachary, the son of Elton John and David Furnish.