Katy Perry sure KNOws how to make an entrance! When Perry performed a free concert in Philadelphia to support Hillary Clinton she walked out to Janet Jackson’s “Nasty”!
As you can remember, Donlad Trump said Hiliary is “such a nasty woman” , so it was only right!
To seal the deal, the back of Katy's jacket read "I'm with Madam President"!
Watch the full intro and performance below: