I agree the colors are amazing. Kareena does look older then her sister.
i like karishma a lot more in general and love seeing her walk the ramp, recently she was in the indian couture fashion week and wore a beautiful red and gold outfit and i know in the past manish malhotra used her and just made her looking stunning.
also i have the same issue i'm the younger sister but i look older than my sister...it's not our fault we tend to be taller lol