Katy Perry Katy Dresses as Hillary Clinton for Halloween this Year 8 years ago Singer Katy Perry dressed up as US presidential candidate Hillary Clinton while her boyfriend actor Orlando Bloom was seen to… Mean Tweets Again! Watch Lady Gaga, Katy Perry, Drake Read Mean Tweets About Themselves on Camera 9 years ago Haters gonna hate. People write very nasty things on Twitter. But isn't it super fun when celebrities read hateful tweets… Children’s Hospital at Dartmouth-Hitchcock performs Katy Perry’s “Roar” 11 years ago Children and staff gather for an inspiring cover of "Roar" by Katy Perry. I used to bite my tongue and…