RiRi Hints At A Collab With Xtina!

Rihanna hinted that she might be getting DIRRRRTY on her next track.
And who better to get dirrty with than Christina Aguilera?!
RiRi took to the Twitter-verse and dropped a few hints as to who she might be collabing with next.
The singer said the following on Twitter:

Would yall be mad if Birthday #CAKE became a single?
Now here’s the trick question! #IF I put collaborator on it, who would u wanna see lick the icing off????? #CAKE
I need somebody #DIRRRTY on my Birthday #CAKE 😉 lol

We would LOVE a RiRi/Xtina duet. We definitely it should an old school Salt N Pepa look!
Thoughts?
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[Image via WENN.]