California gurls and Teenage dream are definitely her best songs !!!!!!!!!!!!!!! there up beat extremely catchy and california gurls is the 8th most bought song on iTunes and teenage dream is the 13th!!!!! so probably california gurls and teenage dream
Definitely Hot'n'cold!
Katy Perrys favorite song is Killer Queen by Queen.
Wide Awake.
gangnam stylle
that she is as beautiful as a peacok
Waking up in Vegas by Katy Perry
You Are My Sunshine
A singer/song writer/actress
Her two best songs this year are circle the drain and E.T. (Extra Terrestrial)
Yes it is in the movie soul surfer
Sam Pomeroy.
her real break up
Her newest song is E.T (extra-terres-trial)