We are blown away by her transformation from colorful pop-tart to smouldering Old Hollywood meets burlesque sexpot!
When she wasn't striking all those sexy poses, Kristen Wiig chat with Katy about her music and what she's going to serve up next.
Yeah, well, my music is about to get real f**king dark, so…
We're sure that's a reference to her divorce from Russell Brand. Needless to say, we can't wait to hear the music produced from that heartache.
If these shots are anything like the music to come, it's going to be epic!
[Image via Mikael Jansson/Interview Magazine.]