[Honoree Isabelle Huurman, DKMS Executive Vice President in the Americas Katharina Harf and fashion designer Betsey Johnson. Photos via Getty] Last night DKMS-the leaders in fighting Leukemia-hosted their 3rd annual star-studded Gala at Cipriani on 42nd Street. Guests like Betsey Johnson, Derek Lam, Vera Wang, Rihanna, Rachel Zoe, Maria Menounos, and Mario Cantone were just some of the names that came out to support this great cause. More photos below...