To me its between Firework and Hot N Cold. California Gurls and I Kissed A Girl come close, but they take the back seat. I lol at the thought of any of het other singles being her signature song.

Firework. Live.

Firework!

Top 5:
1.Firework
2.I Kissed A Girl
3.California Gurls
4. Hot N' Cold
5.Teenage Dream/ E.T

Last Friday Night ( TGIF )

Firework

Who voted for Last Friday Night?

I had NO CLUE anyone would think firework is her signature song! When i think katy perry i think 'i kissed a girl' or maybe hot&cold, and then MAYBE californiagurls

Why do so many think firework is her signature song? I need that tea!

- Worldwide smash
- Youtube views
- Who can forget the legendary line "do you ever feel, like a plastic bag?"

I think teenage dream will become her signature song tbh

Hot N Cold went #1 in fourteen countries. Firework only 4.

Firework.

I Kissed a girl definitely, it was a worldwide smash and everybody outside internet music forums remembers it, you cant say the same about firework.

Hot N Cold

You stupid hoes would have Firework winning.

I Kissed A Girl was the beginning and end of Katy's cultural impact and will forever be her signature song.

As much as I loved E.T. and LFN... THIS, to be honest...