Rihanna shocked the world Sunday by saying her being pregnant throughout her Tremendous Bowl efficiency — however it was a well-kept secret even amongst individuals who have been a part of the present.

Tremendous Bowl sources inform TMZ … none of her backup dancers — upwards of 280, as we got here to search out out — had any thought RiRi was preggo earlier than she hit the stage this weekend, and that is due partially to the saggy clothes she’d been rocking throughout all of the rehearsals.

Our sources inform us Rihanna was sporting very loose-fitting outfits each on Saturday and on Sunday as she was working towards her set. It wasn’t till showtime that anybody concerned noticed her last costume, which appeared designed to indicate off her stomach.

In different phrases … Rihanna lined her bases right here, not letting anybody concerned with the halftime manufacturing get a whiff of her being pregnant earlier than she may present it off to all.

Keep in mind, Rihanna was additionally seen publicly a pair days earlier than the Tremendous Bowl, when she did an interview speaking about the completely different setlists she’d created … and there, too, RiRi appeared to be attempting to cover her bump — sporting an enormous furry jacket and different fluffy garb.

After all, you possibly can even hint this cover-up again to the Golden Globes in January … the place Rihanna and A$AP Rocky confirmed up in particular person, with RiRi once more sporting a loose-fitting outfit and holding her purse in entrance of her abdomen all through a lot of the published.