December 26, 2011 Photos | Rihanna and Ke$ha Perform At Madison Square Garden Edit Delete Tags Autopost Rihanna and Ke$ha Perform At Madison Square Garden Related Artists Rihanna Ke$ha Source: http://www.mtv.com/photos/rihanna-and-keha-perform-at-madison-square-garden/1645685/5112572/photo.jhtmlGretha Cavazzoni Gwen Stefani Halle Berry Hayden Panettiere Haylie Duff