Rihanna pregnant RUMORS, Drake vs. Chris Brown baby bump? RiRi 'gives up' smoking weed, partying, drinking [PHOTOS]

Rumors now suggest that Rihanna is PREGNANT!

But who might be the daddy - Drake or Chris Brown?

UPDATE: Rihanna NOT pregnant, motherhood 'last thing' on Drake's girlfriend's mind: Chris Brown baby bump rumors false

Rihanna & Drake sex tape Facebook SCAM! Fake porno goes viral, now RiRi pregnant with Chris Brown's baby?

Such baby bump buzz has yet to be confirmed, but according to the infamous gossip webloid MediaTakeOut.com, RiRi is definitely beginning to flaunt a mini baby bump here. Check out the pics and decide for yourself. In the snapshots, the "Diamonds" songstress is spotted drinking "decafinated tea" with her father.

An MTO "snitch" reveals that the 26-year-old Barbadian beauty recently stopped smoking weed and cigarettes. Even more surprising, she gave up partying and drinking alcohol (cold turkey). Guess that could only really mean one thing!

Apparently, RiRi "refused" to attend another after-party on Drizzy's tour bus because there would be "too much alcohol and weed smoke." Interesting - Rihanna rarely turns down an opportunity to have a good time.

If the baby bump rumors ARE true - who's the baby daddy? RiRi is currently dating the Nothing Was The Same crooner, and their relationship is on fire. But Rihanna can't seem to let go of troubled ex, Chris Brown. Apparently she "secretly" visited him in rehab, and the duo even allegedly hung-out afterwards. Maybe they irresponsibly hooked-up during that time?

Wow - crazy stuff. RiRi has yet to address the pregnancy rumors. Do Mstars fans believe all of the hype? Stay tuned as more details develop!