^ @ CT, I agree and that's the first thing I noticed that it would have been better if kat smiled a little more...but then gave her BOD that its her first appearance so may be she is bit tensed or nervous. In fact, Aish is like that also...hardly any emotions in her appearance. too formal / life less kinda.
Couldn't agree more regarding Sonam, She kills it with her candid smile/warmth/expressive face ...and those expression do play part in your appearance and connect with the audience , same with Nandita.