Harleen is 22 years old as per the marriage certificate, she is the same age as Naaz. So Harleen has to be Naaz's twin sister.
Advait is 29 Years old.
if harleen is twin sister then itane saal use kaha chhupa ke rakha tha
this age fund of naaz n harleen doesn't make sense.
if she had harleen after leaving for Canada still 5 years difference is there
between the look of isha as harleen give same age vibes itna bakwas hai with that weird wig n long lose dresses (is that jasso came as harleen wearing lenses? coz she doesn't like when advait called her aunty)