The singer shared that she was already preparing for the stage when she was informed of the cancellation due to bad weather ...

A decade and a half after its release, Katy Perry's "Last Friday Night (T.G.I.F.)" debuts on multiple Billboard charts, becoming a global hit (again).

Add Yahoo as a preferred source to see more of our stories on Google. (NewsNation) — A 15-year-old Katy Perry song has made its way back on the Billboard charts. “Last Friday Night (T.G.I.F.),” off ...

Katy Perry has admitted she is glad she "decided to stick around" after enduring what she described as the "worst year" of ...