Rihanna and Nicki Minaj tweet about'hook up'on set of'Fly'music video

RihannaandNicki Minajthink each other are fly, and they don't care who knows it.

RiRi posted photos onTwitterSaturday from the set of their new music video,"Fly,"with jokes about hooking up with the 26-year-old"Here I Am"singer.

"Me and Nikki in our new crib, lol! Gettin busy on set of FLY!!!"Rihanna wrote."Its so hard to keep my hands off!"

The picture showed Minaj sticking her tongue out as her 22-year-old duet partner made a kissy face next to Minaj’s cleavage.

In response, the rappertweeted,"@rihanna lol. If we're gonna liv 2gthr and hook up u gotta learn how 2 spell my name! Lmaooooooo. ---- Gossip Gossip...just stop it! :p"

The"What's My Name?"singer, who recently broke up withLos Angeles Dodgers' playerMatt Kemp, quickly responded with an apology and an innuendo.

"My bad, I'll make it up to u *wink*,"Rihanna tweeted.

This is not the first time the divas have gotten frisky in the public eye. At theAmerican Music Awardsin November, RiRi grabbed Minaj's rear end on stage after winning  the Favorite Female Artist award.

"I love Ri-Ri!"Minaj toldeonline.comon Friday."I mean, when she's not grabbing my ass she's a sweet girl.

She later told the website that she was"single and ready to mingle."

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