Played with a capo on 1st fret;)

G
mirror, mirror on the wall
Bm
ruthless to your victim
G
suiting you becomes my love
A
tied to my reflection
G
hunger takes a hold of me
Bm
making my decisions
G
glossy fashion magazines 
     A
will feed my new addiction

Chorus

G
skinny
          A
all these voices singing
G
skinny
          A
all my monsters singing
G
skinny
        A             G
got to fit that new bikini

G
skinny
         A
all the world is singing
G
skinny
          A                      G
all them girls are swinging   
       A               G
got to fit that new bikini

(Part 2
G
hiding in my baggy jeans
Bm
No one knows my secret
G
Hiding from the eyes that see
A
I have been defeated
G
mirror, mirror on my wall
Bm
ruthless to your victim
G
Suiting you is all i know
A
A slave to my reflection

Chorus

G
skinny
          A
all these voices singing
G
skinny
          A
all my monsters singing
G
skinny
        A             G
got to fit that new bikini

G
skinny
         A
all the world is singing
G
skinny
          A                      G
all them girls are swinging   
       A               G
got to fit that new bikini

来源：www.ultimate-guitar.com