Katy Perry dons patriotic Stars and Stripes dress as she urges voters to "rock for Hillary Clinton"

Katy Perry has urged young America voters to "rock for Hillary " as she performed at a Clinton campaign event in Philadelphia.

The singer , a staunch supporter of the Democratic presidential nominee , donned a patriotic Stars and Stripes dress as she appeared at the "Love Trumps Hate" themed concert.

The 32-year-old star urged the audience to be sure to vote, telling them, "all the campaigning in the world doesn't mean anything if people don't vote."