After another smokin' hot performance at Sunday's MuchMusic awards in Canada, Rihanna was back in New York last night out to dinner with some friends. She showed off her hot legs but this time her man friend Chris Brown wasn't around to appreciate it. While apart she wasn't far from his mind. Over the weekend Chris performed Rihanna's "Umbrella" at 16-year-old Russian designer Kira Plastinina's store opening in LA. Pretty sweet even if the young hot singers won't really admit they're dating.