Rihanna And Chris Brown Party At Same Nightclub

Rihanna’s remix of dirty track ‘Birthday Cake’ will “shock the world” according to the song’s producer leading to speculation that Chris Brown maybe collaborating on the track.

The sexual song is barely a minute long and according to co-producers Da Internz will be getting a shocking remix.

They told MTV: "It's gonna be crazy. “And the feature on there is gonna shock the world."

They refused to reveal the identity of the collaborator but insisted that it will have the shock value we have come to expect from Rihanna.

They said: "The visual has to go with it because everybody's going to be like, 'Oh my god!'

The ‘Rude Boy’ singer has also got fans excited about the new track and has taken to twitter to tease her followers over the mystery man joining her on the track.

She tweeted: "I need somebody #DIRRRTY on my Birthday #CAKE ; ) lol."

She later added: "Now here's the trick question! #IF I put collaborator on it, who would u wanna see lick the icing off????? #CAKE "And please!!!! No girls allowed on #CAKE."

Speculation that it could be her ex-boyfriend Chris Brown who infamously assaulted the singer in 2009 has been rife after they have been turning up to the same clubs and restaurants separately over the last few weeks.

The ‘F.A.M.E’ singer even went to the ‘You Da One’ star’s birthday party in Hollywood this week and reportedly spent the whole night with the ‘birthday’ girl.

Was this is a hint of a more public BIRTHDAY reunion?