Rihanna and her ex Chris Brown — with his girlfriend Karrueche Tran — came face to face at West Hollywood club Greystone Manor on Sunday, where spies tell us they “shot dirty looks” at each other during the night. The run-in occurred after months of targeted tweets, online feuding and a few other close encounters.

PHOTOS: RIHANNA

At the club’s weekly “urban” night, Brown and Tran partied at a table with The Game, drinking Ace of Spades Champagne. RiRi arrived shortly after with friends, and sat with comedian and actor Kevin Hart at a table near the DJ booth, overlooking the dance floor where Brown and Tran were sitting. A spy told Page Six, “Chris and Rihanna sat a few tables away from each other and shot dirty looks at each other all night. No one saw them actually interact. Rihanna was escorted to the bathroom multiple times and walked by Chris’ table each time, not even batting an eyelash.” While reps for Brown have insisted he and Rihanna are friends, Rihanna hasn’t been quite so friendly on Twitter. On March 6, she was believed to be taking a shot at Brown’s new love, tweeting, “I’m a leader, yall on some followin [bleep] . . . comin in dis game on some modeling [bleep]!” — possibly mocking Tran, who is a model.