Demi Lovato Nick Jonas Collaboration: Will 'Neon Lights' Singer Form Band With Jonas Brother? [PHOTO]

Demi Lovato is on the brink of a worldwide DEMI Tour and is the new face of the Human Rights Campaign's Americans for Marriage Equality, but she's still finding time to hit the recording studio.

Yesterday, Lovato teased a secretive project on her official Twitter and Instagram and it's a "killer duet."

"Recorded a KILLER duet today.... Can you guess who it was with???" she posted on her various social media outlets alongside a photo of two thumbs giving an up-sign in front of a keyboard and soundboard.

The pop star hasn't revealed the identity of the second thumb yet, and she is playing it like some big secret.

Or, as MTV points out, it's probably not so secretive and the other singer is none other than former Jonas Brother/longtime Lovato collaborator Nick Jonas.

As Twitter fan noted, the light grey suit seen in the very bottom left corner of the image looks eerily similar to the outfit Jonas rocked on July 13, and the little thumb looks a lot like the youngest JoBro's finger, too.

 Nick Jonas sang with Demi Lovato during her Neon Lights tour, so they have worked together already.

"I did write an amazing song with Nick Jonas and we want to do something with that, but we are not quite sure, so maybe we can do a side project together," Demi told MTV News this week. "We may or may not have picked out the band name already."

"I know he's working on his new album too, so it might not be for awhile, but the two of us... I'm always writing songs and he's always writing songs."

Nick served as creative director to Demi's Neon Lights Tour, and while she's in the early stages of planning her Demi: The World Tour, she knows her former "Camp Rock" co-star will somehow be involved.

"I actually haven't started the process, so possibly," Demi said of working with Nick on tour. " I know he's busy doing a TV show now, but he's gonna be involved somehow whether that's performances or not. Inevitably we end up on the same team, musically. It just always happens."