I agree the photographer has caught her looking a little phased .But that's only natural .Plus we're so accustomed to her megawatt smile ...
I don't like the outfit either ,a darker ,more saturated colour would have been better IMHO .Maybe teal ?
This is helpful about the trousers
Churidars, or more properly churidar pyjamas, are tightly fitting trousers worn by both men and women in the Indian subcontinent. Churidars are a variant of the common shalwar pants. Shalwars are cut wide at the top and narrow at the ankle. Churidars narrow more quickly, so that contours of the leg are revealed.