Katy Perry was the first pop star on the Hillary train, and if Clinton gets elected, she?ll have the most powerful woman in the world in her corner. Looks like it?s gonna be a looong 4 years for her nemesis. One year ago today, Katy Perry, dressed in an American flag cape and a white strapless dress with a blue and red ?H? festooned over her heart, swished onto an Iowa stage. ?Make some noise if you?re for Hillary!?