A highly trusted source very close to both Chris Brown and Rihanna is telling GossipOnThis.com that Rihanna is NOT pregnant! They also added that Rihanna didn’t have any kind of “private birthday dinner” with friends in Los Angeles, as previously reported by Life & Style. She actually spent the weekend of her birthday in Mexico smoking pot and drinking liquor … just like any legal 21 year old would do on their 21st birthday, right?

RIHANNA IS NOT PREGNANT!

“Rihanna went to a club in Mexico for her birthday and she celebrated by actually drinking and smoking. So she’s definitely not pregnant,” a source exclusively revealed to Gossip On This.

Rihanna didn’t partake in any party or any kind of celebration at all in her home country of Barbados. In fact, the pop singer hasn’t even been home  since the incident that occured between her and Chris Brown the weekend of the 2009 Grammys. She had been holed up in her Beverly Hills apartment and didn’t leave until she flew to Mexico to celebrate her 21st birthday.

CHRIS BROWN HASN’T SENT RIHANNA ANY EXPENSIVE GIFTS!

Our source also wanted to make it clear that Chris Brown hasn’t had any kind of contact with Rihanna since the Grammy weekend incident. So those rumors of him sending her all kinds of expensive gifts to “win her heart back” are completely false.

“Chris never sent Rihanna an iPhone or any kind of gifts, neither did his mom send flowers. No gifts were exchanged to Rihanna from Chris’ camp,” a source tells Gossip On This.

Story developing … we’ll keep you posted. KEEP IT LOCKED, AND REMEMBER WHERE YOU HEARD IT FIRST!