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If you have never heard of this song before, you 白活了！

haha okay just being exaggerating!

i don't like the acoustic version i don't like covers.

i like the original version of Teenage Dream.

the person who composed this song must be a genius.

Not forgetting Firework, another awesome song with equally awesome lyrics.

Can't stop singing along with Katy's songs!

Especially like the last portion of the LIVE performance (3:46 onwards to be exact) where she sings

I might get your heart racing
In my skin-tight jeans
Be your teenage dream tonight

Splendid performance!

Enjoy~