Miley Cyrus and Ariana Grande Sing ‘Don’t Dream It’s Over’ in Animal Onesies

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Miley Cyrus has been doing a lot of covers lately (she did a string of covers at the Adult Swim upfronts party last night, including Johnny Cash's "A Boy Named Sue" and Khia's "My Neck, My Back"*), so it's only fitting that she'd enlist fellow former tween star Ariana Grande on a cover of the Crowded House classic "Don't Dream It's Over" to promote her Happy Hippie foundation, which raises money for homeless and LGBT youth. They're totally jamming out until Miley starts flirting with Ariana, because when a mouse-bear and a unicorn meet in a forest, they can't help but flirt.

Happy Hippie Presents: Backyard Sessions - "Don't Dream It's Over" featuring Ariana Grande

Soooooo thankful for Ariana Grande for being a part of the #backyardsessions!! You're the sweetest little #happyhippie bear-mouse ever! Loooooove you The Happy Hippie Foundation #HappyHippiePresents #dontdreamitsover

Posted by Miley Cyrus on Thursday, May 14, 2015

* This post misidentified the original singer of "My Neck, My Back."