AceShowbiz -

Rumor has it, Chris Brown and Rihanna will hook up in an upcoming remix of her latest single "Birthday Cake". According to Hot97's MissInfo, Breezy has already recorded two verses for the revamped track. If they both make the cut, he will be singing and rapping in the song.

The collaboration news came just a few days after Breezy was reported helping Riri celebrate her 24th birthday. He allegedly was among the 100 of guests who came to the Caribbean-themed party at the Hearst Mansion in Beverly Hills on Monday, February 13 night.

Earlier this week, the song's co-producers Da Internz warned that the featured guest in the reworked version of the song "is gonna shock the world." Tuo told MTV News, "It's gonna be crazy." Refusing to spill the beans, Kosine said, "All I'm gonna say is stay tuned - it's dropping [this] week."

Riri herself has teased about her featured guest on Twitter. Without mentioning who he/she was, the Bajan singer wrote, "I need somebody #DIRRRTY on my Birthday #CAKE ; ) lol." This sparked rumor that she's going to collaborate with Christina Aguilera.

She added back then, "Now here's the trick question! #IF I put collaborator on it, who would u wanna see lick the icing off????? #CAKE." Her next tweet, however, squashed the X-Tina speculation. "And please!!!! No girls allowed on #CAKE," she revealed.