Are Rihanna And Christina Aguilera Secretly Collaborating?

Rihanna wants to continue her good girl gone bad image with the queen of lace-chaps, hot pants, multiple-piercings, and different colored extensions. Although Christina Aguilera's dirty days were short but sweet, the Barbados-born beaut seems to want the "Genie in a Bottle" hitmaker to prove she still has that winking sauciness she shocked the world with a few years ago. 

RiRi who is set to release her next single from her sixth studio album Talk That Talk, in stores now, insinuated the duet was a go on Twitter on February 6th. 

"Would yall be mad if Birthday #CAKE became a single?," Rihanna tweeted.

"Now here's the trick question! #IF I put collaborator on it, who would u wanna see lick the icing off????? #CAKE," asked Rihanna. "I need somebody #DIRRRTY on my Birthday #CAKE ;) lol."

I'm all for female duets especially something as racy as a Rihanna and Christina Aguilera collaboration. 

What are your thoughts on these two women working together?