Pictures of gay dads Neil Patrick Harris and David Burtka holding their twin babies are in the current issue of PEOPLE magazine.

Harris, the star of CBS' How I Met Your Mother, and celebrity chef Burtka welcomed twins Gideon Scott and Harper Grace, who were born via a surrogate, on October 12, 2010.

In one photo, the babies are pictured wearing identical “I [heart] My Dads” outfits.

“Everyone says that it's such a blur after it happens,” Harris told PEOPLE. “I find myself constantly just trying to wrap my mind around it.”

The fraternal twins each have a distinct father.

“We inserted two eggs, one with my sperm, one with David's sperm and they both took,” Harris said.

Burtka said, “We had two babies that we made. With help.”

“Harper has been fussy but Gideon is the easiest baby in the world,” he added. “They're just now starting to recognize us and smile.”

Harris, 37, and Burtka, 35, entered a California domestic partnership in 2004.