Adding to Hillary Clinton's long list of star-studded events, pop artist Katy Perry will perform for free at the Mann Center Saturday at a campaign event for the Democratic candidate.

Just days before Election Day, the "Firework" singer will perform as a last-minute push to urge Pennsylvanians to vote for Clinton. 

Perry has been active in Clinton's campaign since an event last year in Iowa, and performed her hit songs "Roar" and "Rise" on the final night of the Democratic National Convention before Clinton took the stage back in July in Philadelphia. 

The event is scheduled for 5:30 p.m. Tickets are free, but registration is required at www.hillaryclinton.com.