Lindsay
Lohan
is
reportedly
set
to
extend
her
stay
in
rehab.
The
troubled
actress
-
currently
in
residence
at
Malibu's
Promises
rehab
centre
-
has
decided
to
stay
until
she
has
fully
recovered.
A
source
told
a
New
York
newspaper
that
she
is
staying
in
Promises
for
longer
than
a
month.
We
don't
know
how
much
longer
because
of
her
work
schedule,
but
she
is
taking
rehab
very
seriously
this
time
and
not
messing
around.
The
'Mean
Girls'
actress
was
initially
set
to
leave
Promises
-
which
normally
lets
clients
stay
for
a
month
-
at
the
end
of
this
week.
On
Monday,
Lindsay
cancelled
her
21st
birthday
party
at
Las
Vegas'
Pure
nightclub.
'PURE'
representative
Kate
Turner
said,
"We
support
Lindsay
and
wish
her
the
best
as
she
is
taking
care
of
personal
matters
at
this
time.
Due
to
the
unique
circumstances
Lindsay's
birthday
party
at
Pure
Nightclub
has
been
cancelled.
We
think
the
world
of
her
and
look
forward
to
working
with
her
in
the
future."
Lindsay,
20,
entered
rehab
for
the
second
time
this
year
following
her
arrest
for
DUI
(driving
under
the
influence)
last
month.
Police
found
a
"usable
amount" of
cocaine
in
the
vehicle
Lindsay
has
been
driving.