Neil Patrick Harris and his family became characters from Alice in Wonderland for the children’s preschool Halloween party.

Harris and his husband David Burtka are Tweedledee and Tweedledum, and their twin children are Alice and the White Rabbit. The actor shared a photo of the adorable family on Instagram over the weekend:

Burtka shared a photo of the kids having fun on Monday:

The How I Met Your Mother star says that Burtka was the one who came up with the idea for the costumes, and Harris says that another pair of costumes just for the adults will be revealed in a few more days for another (adult) Halloween party.

The Harris-Burtka family are no strangers to dressing up for Halloween and other events. Over the past couple of years they’ve portrayed characters from The Wizard of Oz, Peter Pan, and Sherlock.

We’re already looking forward to next year’s costumes!

Harris is best known for his role in How I Met Your Mother, but he’s also been a host for the Primetime Emmy Awards and the Tony Awards in recent years. The fraternal twins Gideon Scott and Harper Grace were born in October 2010. Burtka was once an actor but quit to become a professional chef, according to Harris in 2009. He had a role on his now-husband’s HIMYM several years ago.