UPDATE: The video originally posted here (which compared Catherine, Duchess of Cambridge to the elegant actress Audrey Hepburn) is no longer available, so here instead is a photo of Ms. Hepburn. It's from a trailer for the excellent movie Roman Holiday, in which she played, yes, a princess.
No. She is more like the Greer Garson of 2011. A very poised and gracious lady.
Oh, that's a nice comparison. I don't see much resemblance to Audrey Hepburn, except that Catherine is currently very thin.