Before
beginning
to
shoot
for
his
forthcoming
film
Kahaani,
director
Sujoy
Ghosh
made
Vidya
Balan
(the
female
lead
in
Kahaani)
walk
on
the
streets
of
Kolkata
in
a
pregnant
get-up.
Vidya
Balan
walked
on
the
streets
of
Kolkata
and
even
climbed
into
a
tram.
As
Vidya
plays
the
role
of
a
pregnant
woman
in
Kahaani,
she
went
around
the
streets
in
a
pregnant-getup.
However,
the
actress
went
absolutely
unnoticed.
Vidya
Balan
mingled
with
the
crowd
in
such
a
way
that
a
passenger
even
got
up
to
offer
his
seat
to
Vidya
Balan
in
a
tram.
Sujoy
Ghosh
added
that
they
were
lucky
that
nobody
recognised
Vidya
or
else
she
would
have
been
mobbed!