Singer plans collaboration with Caitlyn Jenner

Miley Cyrus could be working with Caitlyn Jenner on some new project. But what exactly?

The 22-year-old pop star shared a photo on Instagram late Tuesday night (June 16), hinting at a possible collaboration in her caption by writing, "dirtyhippie collab coming soon #callmecaitlyn #ilovecaitlyn."

In May, 'the 'Wrecking Ball' hit-maker revealed how inspired she was by the Olympic gold medalist's journey, saying, "[Caitlyn] Jenner spoke beautifully about using [her] platform and fame to DO GOOD and to make real change, and I want to do exactly that!"

Miley has also been using her voice to promote the Happy Hippie Foundation -- the organization she founded that fights injustice surrounding homeless and LGBT youth.

So the question is what exactly would Miley and Caitlyn be working on? What do you think?