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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|--3-2-0
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|-------
|-------
|-------

Am (x02210@1)             C (x32010@1)Hey there Little Red Riding Hood, 
DYou (xx0232@1)sure are looking good. 
       F (133211@1)          E (022100@1)                 
You're everything a big bad wolf could want.

Strum each chord up and down 3 times: E E7

Am (x02210@1)       CLittle (x32010@1)Red Riding Hood 
DI (xx0232@1)don't think little big girls should 
   F (133211@1)              EGo (022100@1)walking in these spooky old woods alone.

CWhat (x32010@1)big eyes you have,
Am (x02210@1)The kind of eyes that drive wolves mad. 
DSo (xx0232@1)just to see that you don't get chased 
        GI (320003@1)think I ought to walk with you for a ways.

CWhat (x32010@1)full lips you have.
Am (x02210@1)They're sure to lure someone bad. 
DSo (xx0232@1)until you get to grandma's place 
        GI (320003@1)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!