Apparently, Katy Perry likes to be efficient. I can find no other reason why there is a picture of Katy Perry naked in the bath, eating a pizza, that she posted to Twitter. That's three things at once. Bathing, eating, and Twittering, or tweeting, or is that Twatting? In this case it's probably the last one.
Anyway, efficient. Either that or she's an attention whore.
You know, I'm liking that celebrities use Twitter more and more every day. Now, if you want to see some actual Katy Perry nudity, here's a Katy Perry nipple slip.