Hi guys - this is my first tab, so you are welcome to come with (constructive) criticism :P 
My girlfriend loves this song, and I couldn't find any existing chords for it 
online. Chords are by ear/watching the music video.

Capo on 3rd fret.

There are 2 chord variations:

Variation 1: Am C D F E E7

Variation 2: C Am D G

The song begins with a tiny run on the A string played twice:

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Am               C 
Hey there Little Red Riding Hood, 
D
You sure are looking good. 
       F            E                   
You're everything a big bad wolf could want. 

Strum each chord up and down 3 times: E E7

Am         C
Little Red Riding Hood 
D
I don't think little big girls should 
   F                E
Go walking in these spooky old woods alone. 

C
What big eyes you have,
Am 
The kind of eyes that drive wolves mad. 
D
So just to see that you don't get chased 
        G
I think I ought to walk with you for a ways.

C
What full lips you have.
Am 
They're sure to lure someone bad. 
D
So until you get to grandma's place 
        G
I think you ought to walk with me and be safe.

Same pattern through out the song.

Outro is a lot of Am and 1 finishing E7

Enjoy!