Neil Patrick Harris, David Burtka, Harper Grace, Gideon Scott

Neil Patrick Harris and his family got in the Halloween spirit early this year!

The How I Met Your Mother star, husband David Burtka and their twins dressed up in Alice in Wonderland-themed costumes. The proud parents took on the roles of Tweedledee and Tweedledum, while daughter Harper was Alice and son Gideon looked spiffy as the White Rabbit, complete with pocket watch.

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"Our costumes for the Halloween carnival at the kids' preschool yesterday," Harris wrote while posting the photo. "But 10/31 will be frighteningly different..! @DavidBurtka came up with both themes/costumes. He's amazing."

The costumes are just as cute as that year they went with the Peter Pan theme, right?