Last night the popular radio station KIIS FM held a Wango Tango Concert at the Staples Center in Los Angeles. Quite a few of the station's most played stars showed up to party, most noticeably miss Britney Spears! We rarely see her attend events anymore which is a shame, because she cleans up so nicely! She looked lovely, albeit a bit shy in front of the cameras and even though her outfit was nothing amazing, it was still really cute, and really her.Check out who else showed up in the gallery below!