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Rita Ora performed at the Highline Ballroom in New York City on Monday evening, and after a few minutes onstage, the 22-year-old singer ripped off her pajama-inspired top and revealed her stomach. If you've got it, flaunt it! Or maybe she was just getting sweaty? Either way, she put on quite a show! Rita later tweeted at Jay-Z, "I duno why I can't stop talkin about last night it was amazing especially when you got your big brother with you."

While it seems like Rita and former fling Rob Kardashian are no longer at each other's throats on Twitter, Rob gas spoken out about his current relationship status, telling Ryan Seacrest, “I’m very, very single. I’m very, very happy. For the first time in a long time which is good. Honestly, it’s all about workin’ out in the new year and businesses. I’m really focused on me. This is just the beginning.”