Perry, 40, is among those contributing to Thursday's FireAid benefit concert, to raise funds for those affected by the Southern California wildfires. Billie Eilish, Lady Gaga, Red Hot Chili Peppers, No Doubt, Green Day, Joni Mitchell and Stevie Nicks are also among those participating.

Perry announced the U.S. stops for her tour on Monday, which includes a show in Boston. She last played in the city in 2017 for "Witness: The Tour." Despite the long hiatus, Perry told USA TODAY that her shows will still be like “Disneyland on wheels.

After a string of shows in Australia and Canada, Perry will return to the U.S. for additional dates starting July 12 in Phoenix. The tour will wrap up in Miami on August 23 before heading to South America and Europe.