yes Katy Perry does sing firework
Yes, Katy Perry was one of the cowriters for the song 'ET'.
no
Carly Rae! Katy perry is autotuned
Katy Perry
Sing
no
Sing
Katy Perry
I don't think she did. Katy Perry sings and records her songs but I've never, ever seen Katy Perry sing on commercials, sorry. If she did, the commercial would be old by now.
Katy perry :)
her husband