April 17, 2012 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 Amanda Peet Amanda Righetti Amanda Swisten Amber Arbucci Amber Brkich Amber Heard Amber Valletta America Ferrera Amerie Amy Cobb