New
York
(ANI):
Pop
diva
Britney
Spears
is
so
obsessed
with
her
looks
that
she
doesn"t
even
workout
without
her
make
up.
The
'Toxic" singer
was
seen
all
decked
up
running
on
a
treadmill
and
doing
crunches
at
the
Mondrian
Hotel
in
Hollywood
along
with
her
mother,
who
used
dumbbells,
reports
the
New
York
Post.
According
to
a
witness,
Spears
worked
up
such
a
sweat,
"she
looked
like
Heath
Ledger
as
the
Joker".
The
28-year-old
beauty
has
also
changed
her
blonde
hair
into
brunette.
She
tried
to
sneak
into
the
hotel
unnoticed,
but
unfortunately
even
with
her
new
hair
colour
she
was
easily
recognized.