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Credit: Getty Images
NEW YORK, NY - APRIL 26: (L-R) Solange Knowles, co-founder and COO of DKMS Americas Katharina Harf and Nelly attend the 6th annual DKMS Linked Against Blood Cancer gala at Cipriani Wall Street on April 26, 2012 in New York City. (Photo by Theo Wargo/Getty Images)