Are Chris Brown and Karrueche Tran together again? The on-again, off-again couple appeared to have ended their relationship last year when the model publicly broke up with her boyfriend via Twitter. But now, Tran's new Instagram post is sparking rumors that the two may have made up again.

On Monday, Jan. 18, Tran took to the photo sharing site to post a picture of her and a friend at a Lakers basketball game. In the photo, the model is casually dressed and is resting her chin on her left hand, which sports a huge diamond ring.

It is unclear whether the ring is from the "Ayo" singer, but back in 2014, the 26-year-old allegedly gave her two massive rings for Christmas. That year, Tran posted a picture of her wearing both rings—a round, pale yellow diamond ring and a square-cut diamond surrounded by smaller diamonds—but the photo has been deleted.

Fans immediately took to Tran's Instagram page to comment on the photo with one commenter saying that the ring looked familiar. Meanwhile, there were some who argued that the ring that she is sporting in the picture may not have been given to her by Brown and that she may have bought it herself.

"It's hers, she can wear it if she wants to," wrote one fan.

Back in March, Tran ended things with her boyfriend of four years after it was revealed that Brown fathered a baby girl, Royalty, with another woman.

The model took to Twitter on March 4 to publicly end things with the singer, writing, "Listen. One can only take so much. The best of luck to Chris and his family. No baby drama for me."

These days, Brown is busy working on his music and promoting his album, which he named after his baby girl. Meanwhile, Tran has been pursuing a career in film and recently filmed a movie called "Only for One Night" which is slated to premiere this year.