Hey now, hey now! Miley Cyrus is back with a new edition of Happy Hippie Foundation’s Backyard Sessions, and this time she's joined by Ariana Grande for a stellar cover of “Don’t Dream It’s Over.” Watch the video right here.

Cyrus kills it yet again, but as opposed to her sunny backyard sessions with Against Me!’s Laura Jane Grace and Joan Jett, the "We Can't Stop" singer and Grande look like they're ready for the weirdest sleepover ever. Camped out on the putrid green inflatable couch that haunted your Delia's catalog youth while wearing snuggly onesies, the duo serve up a laid-back rendition of Crowded House's 1986 hit.

Just as we were trying to determine whether Grande’s onesie was a mouse or a koala (Stitch? Is it Stitch?), Cyrus halts the festivities with the question of the hour: “Are you a mouse or a bear?” After Grande’s momentary uncomfortable silence, Cyrus concludes, “Whatever you are, it’s probably the cutest mouse-bear in the universe.”

The sudden digression leads Grande to miss her cue, and Cyrus quickly apologizes, “Sorry, I was flirting.” Nevertheless, she and Grande effortlessly pick up and finish out the song.

Cyrus previously teamed up with Laura Jane Grace on Against Me!’s “True Trans Soul Rebel.” She also invited Joan Jett to perform the iconic rockers’ “Different.” Then, all three women collaborated on the Replacements’ “Androgynous.”

All of Cyrus’ Backyard Sessions support her Happy Hippie Foundation, which offers aid to LGBT and homeless youth. In an essay for Medium, Cyrus opened up about her motivation behind her new organization.

“For a year, my focus has been on helping homeless youth, and it was heartbreaking to hear that 40 percent of homeless teens identify as LGBT,” Cyrus writes. “The more I learned about what life can be like as a transgender person, the more I realized how especially woven into homelessness that is. Acceptance is a huge step towards eradicating youth homelessness. Being who you are and who you want to be has nothing to do with gender, sexuality, body type, race, or age.”

See Ariana Grande and More Celebrities Making Out

More From MIX 108