Watch Miley and Ariana Sing "Don't Dream It's Over" In Animal Onesies

When one chills with Miley Cyrus, they chill all the way.

Miley recently recruited Ariana Grande to perform a cover of Crowded House's "Don't Dream It's Over" while decked out in animal onesies and sitting on an inflatable green couch. (At Miley's place, they call this, "Thursday.")

Looks like Miley is rocking that unicorn look, though the song is interrupted over a debate regarding Ariana's animal outfit. Is it a mouse? Is it a bear? Is it adorable? Can't it be all three?

The video is part of a new web-series promoting The Happy Hippy Foundation, a nonprofit organisation founded by Miley Cyrus to support "homeless youth, LGBT youth and other vulnerable populations."

Important causes, all.

Hey, they already had us at "Crowded House cover in animal onesies."