Check out this video out as YAHOO! goes behind the scenes of the video set of “NumberÂ 1 Sex” with R. Kelly and Keri Hilson. You might remember this song from a few months back, when the Keri “gay” rumors began. Keri is really making a name for herself with these collabos huh? They even have a scene where they wear similar glittery jackets in tribute to Michael Jackson. “R.Keri baby!” LOL!