NEW YORK, NY – MAY 01: Singer Katy Perry, CEO of Coty Inc. Michele Scannavini and Co-Founder of Delete Blood Cancer Katharina Harf attend the 2013 Delete Blood Cancer Gala which honors Vera Wang, Leighton Meester and Suzi Weiss-Fischmann on May 1, 2013 in New York City. (Photo by Dimitrios Kambouris/Getty Images for Delete Blood Cancer-DKMS Americas)