Take a look back at Katy Perry's most memorable music video looks from her iconic onscreen tales
"Last Friday Night (T.G.I.F.)"
Before its premiere in June 2011, Perry tweeted, "I told someone about my new music video I just filmed and they responded with 'Wow, that's gonna break the internet.' ... Should I knock on wood?" In the vid, the singer debuts Kathy Beth Terry, the headgear-sporting, outrageously adorkable star of the plot.