IMO, they are both overhyped,spoiled little brats.Kate,especially,has been allowed to get away with far too much, with no intention of changing, and give Kiera time:in every interview I've come across with her, she seems a shallow, dishonest, overindulged and petty snob. Of course, most people are capable of change, but I think it is harder for celebrities to change,as their fans/the media actually encourages or at least overlooks questionable to downright reprehensible behaviour.Anyway though,of course I may be totally wrong about them both, but judging from their public personas,I'd say neither is the right face for Chanel, which to me is representative of something classic and elegant, enduring and universally beautiful,fashionable and yet timeless, and graceful and strong. These women are beautiful,but they both--or at least Kate--come with so much distracting/contradictory baggage, that I just don't see how either is appropriate or--esp. in Kate's case--deserving to be the face of the brand.
Okay, diving off my soapbox, now...!