Chris Brown sent champagne to Rihanna when they partied in the same nightclub at the weekend.

The former couple - who split in 2009 after the "Yeah 3x" singer assaulted his then-girlfriend - sat at different tables at New York's SL on Saturday, but onlookers say they were very aware of one another inside the club.

"After Chris made his way into SL with a group of friends, Rihanna pulled up with her own group of friends. The infamous exes sat far enough from each other to not be able to talk, but close enough to keep an eye on one another. Chris sent Rihanna two bottles of Ace of Spades Champagne. DJ Sinatra had both Rihanna and Chris dancing at their tables," a source said.

The meeting comes a few weeks after Rihanna came face-to-face with Chris and his current girlfriend Karreueche Tran at Los Angeles club Greystone Manor but things were not so friendly. "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," a source said at the time.