One speculated online, “They both look like his husband, so probably biologically they are both not his, but he is their dad no matter what! Love NPH!”

Another agreed with the comment saying, “he doesn’t need to know, we all know Harper has David’s face lol. excited that at least I get to know haha!”

A third one, however, shared, “The boy is his absolute double. And the girl looks like his husband, especially around her nose and mouth.”

Whatever the case of paternity might be, they four of them make one adorable family! Share this with other fans of the actor so they can know about his family life a little bit more!