Rihanna to Collaborate with Christina Aguilera?

Rihanna has already released three songs from her latest album "Talk That Talk," but could her newest tune be a duet with another pop diva?

"Would yall be mad if Birthday #CAKE became a single?" Rihanna asked her Twitter followers yesterday.

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

The comment led the New York Post's Page Six to speculate that Rihanna may have Christina Aguilera in mind for her "Birthday Cake" track, possibly referencing Aguilera's 2002 song "Dirrty."