Share on Google+ : http://goo.gl/yJ7xVo <br />Share on Facebook : http://goo.gl/MTPeyn <br />Tweet now : http://goo.gl/xihGxy <br />Beyonce and Taylor Swift were spotted doing an impromptu dance during Justin Timberlake and Jay Z's live performance at the Brooklyn's Barclay Center. Check out the video here!
