Well these are my first chords,.. this is an easier way to play this song.
Im not quite sure about the very last part
Hope you enjoy it anyway
[Verse]
                    Em                                Bm
You can tell by the way, she walks that she's my girl
                    Am                                  C
You can tell by the way, she talks she rules the world
                    Em                           Bm 
You can see in her eyes that noone is her chief
         Am            C
She's my girl, my supergirl
[Chorus]
               G          
And then she'd say it's okay
       D
I got lost on the way
                Em                         C 
But I'm a supergirl, and supergirls don't cry
               G 
And then she'd say its allright
       D
I got home late last night
               Em                         C
But I'm a supergirl, and supergirls just fly
[Verse]
                    Em              Bm
And then she'd say that nothing can go wrong
                    Am             C
When you're in love, what can go wrong
                    Em                  Bm 
And then she'd laugh the night time into day
         Am            C
Pushing her fear farther along
[Chorus]
               G          
And then she'd say it's okay
       D
I got lost on the way
                Em                         C 
But I'm a supergirl, and supergirls don't cry
               G 
And then she'd say its allright
       D
I got home late last night
               Em                         C
But I'm a supergirl, and supergirls just fly
               G  
And then she'd shout down the line
                D                   
Tell me she's got no more time
               Em                           C
Cause she's a supergirl and supergirls don't cry
                G                   
And then she'd scream in my face
                    D               
Tell me to leave, leave this place, 
                     Em                    C
cause she's a supergirl and supergirls just fly
[Outro]
             G           D  
She's a Supergirl a Supergirl
              Em
She's sowing seeds
               
She's burning trees
              C
She's sowing seeds
               Em
She's burning Trees
           G            D
She's a Supergirl a Supergirl
     Em          C
A Supergirl my Supergirl