Katy Perry performs at Hillary Clinton rally in Philadelphia Saturday Nov 05,2016

Dedicated Hillary Clinton supporter Katy Perry was a vision of red, white and blue on stage in Philadelphia on Saturday night Nov 05,2016

The singer , 32, lent her star power to the Democratic presidential nominee who has been using her signature hit Roar in ad campaigns in the run up to Tuesday Nov 08,2016 's election.

Katy Perry walked out enveloped in a bright blue cape with 'I'm with Madame President' embroidered on the back.