It's official. The universe is completely obsessed with manicures and nail art. If you don't believe us, look here. And celebrities are always a source of inspiration--sometimes for what NOT to do, but usually making us pea green with envy because of their cleverly covered digits. While many famous ladies sported a sophisticated neutral palette this past year, there is an elite pack who said, "Screw that. We like glitter." Katy Perry even famously changed her manicure mid-VMAs this year. Click through to see all the celebs this year who used their nails for artistic expression, to make a personal statement, and sometimes to just generally intimidate us.