Looks like the rumors were true ... well, at least one of them was.
The alleged collaboration of Rihanna and Chris Brown on a remixed version of her single "Birthday Cake" is very much the real deal, as the former couple tweeted it out on Monday evening ... which was Rihanna's 24th birthday, fittingly.
Take a listen to their tag-team effort below:
"@rihanna goo.gl/ttRJR YIKES!!! Cake, cake, cake!" Brown tweeted with a link to Rihanna's "Birthday Cake" remix, which features his new, suggestive lyrics.
Shortly after Rihanna responded with, "#RihannaNavy Come and put ya name on it!!!!! RT @chrisbrown: @rihanna goo.gl/ttRJR YIKES!!! Cake, cake, cake!"
So ... there's that. She then linked to a second collaboration between the two, a remixed version of his "Turn Up the Music." Take a listen to that after the jump: