(Getty Images / Cake via mirror.co.uk) (Robyn is Rihanna's real name)

So RiRi is turning 24 on Monday! & because she's rich and famous, she started the party celebrations 4 days early..

Rumours are it was a wild event with sources saying Bruno Mars was keeping the ladies busy on a couch!

But one thing is for certain, Rhianna had a totally dirty cake! Not the muddy kind... More like the Rihanna kind.

The cake (pictured above) shows what we assume is a RiRi made of sugar straddling a joint cigarette.

This all comes in perfect timing for RiRi with her next single to be released is called.. Birthday Cake!

'Would yall be mad if Birthday #CAKE became a single? Now here's the trick question! #IF I put [a] collaborator on it, who would u wanna see lick the icing off????? #CAKE' She tweeted a while back, and "cake" is grossly reffering to her "lady garden". Sorry if you were eating as you read this.

Who will be featuring on the track? Well the co-producers of the track told MTV:

'The feature on there is gonna shock the world,"  'The visual has to go with it because everybody's going to be like, 'Oh my god!''

Seems to us, Chris Brown would be a suitable fit for that description!

What do you think of Rihanna collaborating with Chris Brown, is 2 years enough to forgive him?