VERRY popular with the song ''FIREWORK'' my opinion is 50/100
Katy Perry.
katy perry is very popular she's one of the best
Katy perry because she is older.
no! Katy perry has been around longer.
well Katy perry does have more twitter followers but justin bieber is more popular
Katy Perry is more popular. She has a gramme, actually 3 Grammies.
tAs of now (August 15, 2010) California Gurls is the most popular Katy Perry song in America!
katy perry's most popular song is thought to only be california gurls but, it could also be firework. you choose your favorite.
Probably not, she will probably keep her name Katy Perry to keep her publicity and to stay popular.
The popular title given to Katy Perry fans is "KatyCats".
Katy Perry would have to be more popular than Carrie Underwood, because Katy's music is played more often and is more widely accepted throughout the world.
yes Katy Perry is lesbian