6:53 PM PT -- Rihanna's rep just confirmed with TMZ, her client is indeed pregnant!!! Congrats, and great show.
Rihanna is back, taking the Super Bowl by storm and reminding everybody what they've been missing for 6-plus years ... and, according to some, she might've even just made a BIG announcement.
The singer/fashion mogul hit the stage Sunday after the 2nd quarter of the game came to a close -- and right from the jump, you could tell this was going to be something else ... with RiRi making a grand entrance to kick off an epic 13-minute set chock-full of hits.