Epic #TBT alert. Ariana Grande and Miley Cyrus teamed up to cover Crowded House's 1986 song, "Don't Dream It's Over" as part or Cyrus's Happy Hippie Foundation backyard sessions and best of all, the whole magical moment was captured on video.

Cyrus launched her Happy Hippie Foundation in February as a way to give homeless youth in America a voice. Melanie Safka and Against Me's Joan Jett and Laura Jane Grace have also sung covers with Cyrus as part of her backyard sessions and now Grande is the latest celeb to stop by. The two pop-stars kept is casual, singing in their onsies and slippers. Watch the full video below: