Egyptian Rihanna performs for Robin hood

Rihanna performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Rihanna performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Neil Young performs as a surprise guest musician at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Rihanna performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Rihanna performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

TV Personality Seth Meyers speaks at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Rapper Black Thought of The Roots performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

File picture: Rihanna performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Chelsea Clinton and her husband Marc Mezvinsky (R) sit in the audience at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

TV Anchor Brian Williams (L) and TV Personality Seth Meyers host from within the audience at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Singer Rihanna performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

TV anchor Brian Williams speaks at the Robin Hood Foundation Benefit, at the Jacob K Javits Convention Center in New York. Photo: Reuters

News anchor Brian Williams and Robin Hood Foundation Founder Paul Tudor Jones speak at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Singer Rihanna performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

Singer Rihanna performs at the Robin Hood Foundation Benefit at the Jacob K Javits Convention Center in New York. Photo: Reuters

In this image released by Robin Hood, American model/Television personality Tyra Banks attends the Robin Hood Annual Benefit, Monday, May 14, 2012, at the Javits Center in New York. Robin Hood funds programs that fight poverty in New York City. (AP Photo/ Robin Hood)