Written by someone who doesn't know Katy well (aside from being a big name celebrity). TMZ obviously got hold of those Katy pics and, in order to justify the enormous money they spent on buying those pics, they concocted this rubbish story.
If bieber is making it rain on strippers then let Katy have her fun, it's her $. And if she smokes weed on occasion so what?! I'm surprised Riri wasn't there for the fun .