Karrueche Tran sexy bikini PHOTOS sparks Chris Brown jealousy? Did Breezy 'cheat' on ex-girlfriend in rehab, 'flirts' with Rihanna before jail time? [INSTAGRAM]

Chris Brown violated probation while in rehab, and now he's sentenced to serve one month in jail.

But does Karrueche Tran even care? The popular couple just broke-up a few weeks ago, and rumors suggest that Breezy may have "cheated" on the aspiring model while seeking help for his anger management. So on Monday (while the "Fine China" crooner was in court), Tran posted some sexy bikini photos on Instagram. Is she trying to make her ex-beau jealous?

karrueche: "Hey Ma @dimepiecela."  

karrueche: "'But not her, boobies real, high heel dooby feel, plus got them Gucci nails" @dimepiecela #DimePiece." 

Oh, and she also dyed her hair blue, apparently.

karrueche: "This is cool."

New do', new attitude?

Rumors initially suggested that Breezy still had "feelings" for ex-girlfriend, Rihanna. But RiRi's currently dating Drake, and Brown eventually set things straight on Twitter:

@chrisbrown: "KAE will always be my heart. That ain't changing." 

Meanwhile, Tran posted:

@karrueche: "not dating anyone stop with the bs." 

So maybe Breezy wants to rekindle a romance with Tran, but she might not be interested anymore at this point. What do Mstars readers think about all of the drama?