Turns out, she'd love to collaborate with either of those hit-makers. And we'd love to hear it.
Ariana answered Twitter questions during a recent Billboard session, including who she'd like to work with.
(Sidenote: Did Ariana get a cross tattoo on her neck? Can't. Stop. Looking. At. It.)
Speaking about Bieber, she said, "I know that Justin wants to write it if we're gonna do something. So I can't just be like 'Hey, do you like this?' He has to sit down and take the time to think about it, which is really cool."
As for Demi, they've been trying to hook up, but timing is an issue, as she explained, "And Demi and I have come up with a couple of cool concepts, but there's no time."
She added, "We're trying to figure it out but it would be awesome. I admire them both so much, it'd be a great opportunity."
Ariana answered a bunch of other questions, including how she would describe her fans in three words: "Amazing, dedicated, unbreakable."
Gallery | Ariana Grande Out and About!