Today is not only the day after the fourth of July, it's also the day that Katy Perry hits the big screen in Katy Perry: Part of Me--but we're expecting to see even more of that teenage dreamy Kitty Purry than we ever have before--including some deets on the whole Russell Brand sitch (and maybe Baptiste?), plus an inside look at her wardrobe of ridiculous but geniously crafted costumes for both on stage and off. So maybe we're not as psyched about seeing Part of Me in 3D as we were Magic Mike or Moonrise Kingdom, but we have to give Perry credit for her unyielding dedication to creative boob-adornment. So, while you're stuck at work for these last few hours, just waiting to print out your pre-bought e-tickets (these showings are sure to sell out), let's take a look at some of Katy's most memorable ensembles since she first came on the pop scene in 2008, just four short years ago. It's so hard to imagine life before her.
All photos: Getty