Katy Perry is celebrating the release of her hotly-anticipated new album 143, which dropped Friday at midnight.

Woman's World is Katy Perry’s worst-performing single release from an album in her 16-year career. What went wrong?

Following a breathless medley of hits at the MTV Video Music Awards last week, Katy Perry clutched her gold-plated Moon ...

Welcome to New Music Friday, your one place to discover the biggest new song, album and DVD releases. First, let's get stuck ...