Cardi B brought out viral sensation Lil Nas X--and her real hair--while performing at London's Wireless Festival on Friday.Billboard reports that the rapper "got so fired up" during her headlining set that she "tore off her long black wig and tossed it into the crowd, leaving her only with a wig cap on her head." Now Cardi's looking for the fan who must have snatched her wig, as she later posted online, "I GOT CARRIED AWAY...I want my wig back. DM me." Meanwhile, Cardi B also drew raves for bringing out Lil Nas X to perform "Old Town Road." She later wrote, "I want to thank @LilNasX for coming out tonight at Wireless! It was lit." She also told Lil Nas, "Keep doing your thing, the stars is the limit."