Kareena
Kapoor
was
the
first
choice
of
director
Imtiaz
Ali's
Rockstar.
However,
as
Ranbir
Kapoor
had
already
been
finalised
for
the
male
lead,
they
decided
against
choosing
Kareena,
who
happens
to
be
Ranbir's
sister.
Director
Imtiaz
Ali,
who
loved
Kareena
Kapoor's
performance
in
Jab
We
Met
wanted
to
cast
her
in
Rockstar.
However,
the
script
in
Rockstar
required
some
romantic
scenes
between
the
romantic
leads.
As
Ranbir
and
Kareena
were
siblings,
this
would
have
been
a
problem.
Moreover,
the
filmmakers
could
not
imagine
replacing
Ranbir
with
any
other
actor
as
the
character
that
Ranbir
Kapoor
plays
in
Rockstar
was
tailor
made
for
him.
They
then
made
a
joint
decision
to
let
go
of
their
plan
to
cast
Kareena
in
Rockstar.
In
an
interview
with
a
leading
newspaper,
Ranbir
Kapoor
admitted
that
Imtiaz
was
keen
to
work
with
Kareena
but
decided
against
doing
so
as
she
was
his
(Ranbir"s)
sister.
Ranbir
Kapoor
had
also
said
that
he
wanted
to
work
with
Kareena
in
the
future,
provided
the
roles
were
not
romantic
ones!