Karrueche Tran may have cut her ties with ex-boyfriend Chris Brown after learning he recently fathered a baby, but it appears that Brown isn't over it yet. 

Tran, 26, has been sharing pictures with her girlfriends on Instagram from a beach vacation at Cancun.

She appears to be having a good time in her pictures, but her ex-boyfriend thought they were a bit too wild. 

Brown, who was apparently Instagram-stalking his ex, didn't quite approve of her skimpy bikini pics. 

"Thirst trap 101," Brown commented on the photo, hinting that he sees the pictures as an attention-seeking stunt. "Continue to be a lady beautiful... U are perfect." 

"Don't let the Thot form from anger," he added, referencing the acronym slang term that stands for "that ho over there."  

Tran and Brown dated on and off for about four years before she learned Brown is the father of their friend, Nia Amey's, 9-month-old baby girl, who was named Royalty.

Tran doesn't appeared to be bothered by Brown's comments, as she continued posting bikini pictures shortly afterward.