Now this is definitely worth a double take!
The longtime couple soaked up the sun and each other as they pushed 19-month-old Gideon and Harper through the streets in their double buggy before heading to the park.
The How I Met Your Mother star, 38, and his hubby-to-be, 37, became proud papas to their two bundles of joy - who wore matching outfits for their day out - through a surrogate in October 2010 and they couldn't happier.
"They're super healthy and they're happy," Harris told Oprah Winfrey while filming Oprah's Next Chapter.
The pair are yet to tie the knot despite being engaged for over six years.
Harris is making a return appearance as the host of the Tony Awards June 10.