Mariah Carey may insist she doesn't know who Ariana Grande is, but Madonna surely does. Earlier this month, Ari shook what her mama gave her at a benefit concert hosted by the "Material Girl" herself.
Leonardo DiCaprio, Paris Hilton, Chris Rock, and more celebs showed up for the night's auction, which raised a whopping $7 million for Raising Malawi, a nonprofit organization co-founded by Madonna. The foundation supports underprivileged children growing up in Malawi, Africa.
On Monday (December 19), Madonna revealed one of the night's biggest highlights that the guests didn't see: her backstage rehearsal with Ari. They both performed at the party, so they snuck in a few shimmies together before the curtain went up.
"How long do we shake it for?" Ari asks mid-routine. "Till I say stop!" Madonna answers.
Ariana reposted the same video a few hours later, adding that she was "still shaking two weeks later." Never say Ari doesn't commit.