Rihanna has posted lip-locking pictures of her and Nicki Minaj from the set of their new music video, 'Fly' and tweeted they are hooking up.


Rihanna

"Me and Nikki in our new crib, lol! Gettin busy on set of FLY!!! Its so hard to keep my hands off!" the New York Daily News quoted Rihanna as writing on Twitter.

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