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Chris Martin, Michael Stipe

NEW YORK, NY - DECEMBER 12: Chris Martin and Michael Stipe perform at "12-12-12" a concert benefiting The Robin Hood Relief Fund to aid the victims of Hurricane Sandy presented by Clear Channel Media & Entertainment, The Madison Square Garden Company and The Weinstein Company at Madison Square Garden on December 12, 2012 in New York City. (Photo by Kevin Mazur/WireImage for Clear Channel)

The Stars Come Out for the 12-12-12 Concert

Kristen Stewart, Katie Holmes, Sean "Diddy" Combs, and others attend the NYC concert to raise money for those affected by Hurricane Sandy.