Katy Perry is probably wide awake ... Clarkson’s 2010s nostalgia-inducing cover of Perry’s song comes weeks after the “Teenage Dream” singer made a 2000s-era fashion statement at Billboard ...

Katy Perry got choked up for her last day as an American Idol judge. The “Teenage Dream” singer ... As Abi, 21, performed a heartfelt cover of the hit song from the Barbie movie, the camera ...

Katy Perry's 2010 hit 'California Gurls' has joined the Spotify Billions Club after reaching one billion streams on the ...

When Katy Perry released her comeback single ... is a zero-sum game", said Kofi Mframa for USA Today. Perry's new album is less "Teenage Dream" and more "adult nightmare". Attempts to "reclaim ...