"Anyone who can raise this kind of awareness and make me know so much about blood cancer is a big deal," Vera Wang said last night at the sixth annual DKMS Linked Against Blood Cancer Gala. The designer was talking about her friend and the benefit's host, Katharina Harf. "I've been coming to this thing for years because it's such a good cause," Wang went on. "I'd be happy to donate blood, but I'm not sure they'd be able to use it."