OMG!!! Rihanna used a BODY DOUBLE for Her Sexy Armani Jeans Ad... Because her buttocks are too flat

Word from out of the UK is that Rihanna was asked to use a BODY DOUBLE in her latest sexy Armani ad. The reason, is that they say Rih's cakes were too FLAT.

Here is what the British SUN newspaper is saying:

Rihanna’s management insisted Irish Jahnassa, 27, sign an order banning her from talking about the job. 

But a source told us: “Jahnassa’s torso, body and bum appear in parts of the ad. 

It’s shocking Rihanna wanted one considering she loves posing with no clothes, plus she’s in great shape.” 

The Belfast-based Style Academy agency booked Jahnassa, who received a “modest sum” for the shoot.

Wo, we knew Rih's cake were a little flat . . . but a body double???