LAS VEGAS (AP) — Bruno Mars couldn't stay away from The Cosmopolitan in Las Vegas for long. The high-energy Grammy-winning pop star is returning New Year's Eve to The Chelsea where he was the venue's debut performer at the casino-hotel two years ago. Mars performed New Year's Eve during The Chelsea's grand opening weekend in 2013 returning for several more appearances in 2014, the same year he headlined the Super Bowl halftime show. This past May, he brought hits "Uptown Funk!Read more on NewsOK.com