Rihanna, Nicki Minaj Tweet About 'Fly,' Joke About Lesbian Hookup (PHOTO)

Are Rihanna and Nicki Minaj collaborating on more than just 'Fly'?

The pop star and rapper duet on a hot new single called, 'Fly,' and they're on set together working on the music video. Apparently, things turned a bit steamy (if not jokingly), if their tweets can be believed.

After tweeting a voluptuous picture of the two, Rihanna posted: "Me and Nikki in our new crib, lol! Gettin busy on set of FLY!!! Its so hard to keep my hands off!"

Not to be outdone, Nicki responded, "@rihanna lol. If we're gonna liv 2gthr and hook up u gotta learn how 2 spell my name! Lmaooooooo. ---- Gossip Gossip ni#@a just stop it! :p"

And it didn't end there -- RIhanna got back to her, writing, "@NICKIMINAJ b***h don't u hear me askin what my OWN name is??? Lol! My bad, I'll make it up to u *wink*"

Of course, it's probably all in good fun, but with their big new track and award-winning ways, what a duo that would be. Hey, Rihanna is recently single.