Hi. I'd like to share with you Katy Perry's "Dressin' up". This song is pretty easy and simple.
The whole song goes with 4 chords:
Am , F , Dm , E

Am
Saucer of milk 
F
Table for two 
Dm
You wanna pet my kitty
E
Your such a dirty doggy. (and goes the the same till the second chorus)

Bridge:
F
Tide
Dm
Tight 
E
Tip
Am
Teasing 
F
Push
Dm
Pull 
E
Pressure
Am
Pleasing 
F               Dm   
Beads of sweat drip down your neck
E                               Am
Breathing deep, gaining speed, about to peak
F
Trembling
Dm
Trembling 
E
Trembling

Chorus x2