Katy Perry has postponed her upcoming Witness tour. She has also announced that Carly Rae Jepsen, Purity Ring, and Noah Cyrus will be opening on select dates.
- 19-Sep Montreal Bell Centre Noah Cyrus*
- 21-Sep Uncasville Mohegan Sun Arena Noah Cyrus
- 22-Sep Pittsburgh PPG Paints Arena Noah Cyrus
- 24-Sep Columbus Schottenstein Center Noah Cyrus*
- 25-Sep Washington, DC Verizon Center Noah Cyrus
- 29-Sep Boston TD Garden Noah Cyrus
- 30-Sep Boston TD Garden Noah Cyrus
- 2-Oct New York Madison Square Garden Noah Cyrus
- 6-Oct New York Madison Square Garden Noah Cyrus
- 8-Oct Newark Prudential Center Noah Cyrus
- 9-Oct Quebec City Videotron Centre Noah Cyrus*
- 11-Oct Brooklyn Barclays Center Noah Cyrus
- 12-Oct Philadelphia Wells Fargo Center Noah Cyrus*
- 16-Oct Louisville KFC Yum! Center Noah Cyrus
- 18-Oct Nashville Bridgestone Arena Noah Cyrus
- 22-Oct St. Louis Scottrade Center Noah Cyrus
- 24-Oct Chicago United Center Noah Cyrus
- 25-Oct Chicago United Center Noah Cyrus
- 27-Oct Kansas City Sprint Center Noah Cyrus
- 31-Oct Toronto Air Canada Centre Noah Cyrus*
- 1-Nov Toronto Air Canada Centre Noah Cyrus*
- 7-Nov Los Angeles STAPLES Center Purity Ring
- 8-Nov Los Angeles STAPLES Center Purity Ring
- 10-Nov Los Angeles STAPLES Center Purity Ring
- 14-Nov San Jose SAP Center Purity Ring
- 24-Nov Salt Lake City Vivint Smart Home Arena Purity Ring
- 26-Nov Denver Pepsi Center Purity Ring
- 28-Nov Omaha CenturyLink Center Purity Ring
- 29-Nov Tulsa BOK Center Purity Ring
- 1-Dec St. Paul Xcel Energy Center Purity Ring
- 2-Dec Des Moines Wells Fargo Arena Purity Ring
- 4-Dec Milwaukee BMO Harris Bradley Center Purity Ring
- 6-Dec Detroit Little Caesars Arena Purity Ring
- 7-Dec Grand Rapids Van Andel Arena Purity Ring
- 9-Dec Indianapolis Bankers Life Fieldhouse Purity Ring
- 10-Dec Cleveland Quicken Loans Arena Purity Ring
- 12-Dec Atlanta Philips Arena Purity Ring
- 15-Dec Tampa Amalie Arena Purity Ring
- 17-Dec Orlando Amway Center Purity Ring
- 20-Dec Miami AmericanAirlines Arena Purity Ring
- 5-Jan New Orleans Smoothie King Center Carly Rae Jepsen
- 7-Jan Houston Toyota Center Carly Rae Jepsen
- 10-Jan San Antonio AT&T Center Carly Rae Jepsen
- 12-Jan Little Rock Verizon Arena Carly Rae Jepsen
- 14-Jan Dallas American Airlines Center Carly Rae Jepsen
- 19-Jan Phoenix Gila River Arena Carly Rae Jepsen
- 20-Jan Las Vegas T-Mobile Arena Carly Rae Jepsen
- 31-Jan Sacramento Golden 1 Center Carly Rae Jepsen
- 2-Feb Portland Moda Center @ Rose Quarter Carly Rae Jepsen
- 3-Feb Tacoma Tacoma Dome Carly Rae Jepsen
- 5-Feb Vancouver Pepsi Live Rogers Arena Carly Rae Jepsen