Let's continue our tribute to this year's Costume Institute Gala by honoring the epitome of American woman: Donna Karan. We spoke to the NYC designer at Neiman Marcus not too long ago — she had a lot to say, like, "If you can't sleep in it, then forget it." Besides being articulate and wildly zen, Donna is also super fashionable. In her 60s, she continues to keep up appearances, mainly dressing utilitarian with a chic edge. I'll let her work speak for itself . . .