Ariana Grande And Joan Jett Hung Out In Miley Cyrus’ Backyard

To benefit Miley Cyrus' Happy Hippies charity, the singer collected quite the motley crew (including Melanie) in her backyard yesterday. Ariana Grande (in a bear suit) and Joan Jett were amongst those invited to participate in Cyrus' "Backyard Sessions." We're not exactly sure what's to come out of all this (a cover of "Brand New Key" seems assured), but stay tuned to the Happy Hippies social media pages to find out.

@mileycyrus taking #happyhippie news to NYC!
A photo posted by Happy Hippie Foundation (@happyhippiefdn) on Feb 13, 2015 at 8:24am PST

& daaaaa kiewtesttttt @arianagrande 🐼#happyhippiepresents @happyhippiefdn
A photo posted by Miley Cyrus (@mileycyrus) on Feb 12, 2015 at 10:47pm PST

da most bad a$ day w da moooossst bad a$ of em all #JoanJett #happyhippiepresents @happyhippiefdn
A photo posted by Miley Cyrus (@mileycyrus) on Feb 12, 2015 at 10:44pm PST

#happyhippiepresents #laurajane #atom #againstme! @happyhippiefdn
A photo posted by Miley Cyrus (@mileycyrus) on Feb 12, 2015 at 6:35pm PST

Happy Piggies @happyhippiefdn
A photo posted by Miley Cyrus (@mileycyrus) on Feb 12, 2015 at 5:58pm PST

got the ultimate #happyhippie on our side @happyhippiefdn @melaniesafka11
A photo posted by Miley Cyrus (@mileycyrus) on Feb 11, 2015 at 5:30pm PST

Lead Image: Ethan Miller / Getty Images.