NORTH AMERICAN DATES
Friday, February 26, 2016: San Diego, CA, Viejas Arena
12.000
Sunday, February 28, 2016: San Jose, CA, SAP Center
20.000
Tuesday, March 01, 2016: Phoenix, AZ, Talking Stick Resort Arena
20.000
Friday, March 04, 2016: Austin, TX, Frank Erwin Center
18.000
Saturday, March 05, 2016: Houston, TX, Toyota Center
19.000
Sunday, March 06, 2016: Dallas, TX, American Airlines Center
21.000
Tuesday, March 08, 2016: New Orleans, LA, Smoothie King Center
17.000
Wednesday, March 09, 2016: Atlanta, GA, Philips Arena
21.000
Saturday, March 12, 2016: Jacksonville, Jacksonville Arena
15.000
Sunday, March 13, 2016: Tampa, FL, Amalie Arena
21.000
Tuesday, March 15, 2016: Miami, FL, American Airlines Arena
20.000
Friday, March 18, 2016: Nashville, TN, Bridgestone Arena
17.000
Saturday, March 19, 2016: Cincinnati, OH, U.S. Bank Arena
18.000
Sunday, March 20, 2016: Charlotte, NC, The Time Warner Cable Arena
18.000
Tuesday, March 22, 2016: Washington, DC, Verizon Center
20.000
Wednesday, March 23, 2016: Buffalo, NY, First Niagara Center
18.000
Thursday, March 24, 2016: Auburn Hills, MI, Palace of Auburn Hills
22.000
Saturday, March 26, 2016: Hartford, CT, XL Center
16.000
Sunday, March 27, 2016: Brooklyn, NY, Barclays Center
19.000
Saturday, April 02, 2016: Newark, NJ, Prudential Center
19.000
Sunday, April 03, 2016: Philadelphia, PA, Wells Fargo
21.000
Tuesday, April 05, 2016: Quebec City, QC, Centre Videotron
20.000
Wednesday, April 06, 2016: Montreal, QC, Bell Centre
15.000
Saturday, April 09, 2016: Baltimore, MD, Royal Farms Arena
14.000
Sunday, April 10, 2016: Boston, MA, TD Garden
20.000
Wednesday, April 13, 2016: Toronto, ON, Air Canada Center
20.000
Friday, April 15, 2016: Chicago, IL, United Center
23.000
Monday, April 18, 2016: Winnipeg, MS,MTS Centre
16.000
Wednesday, April 20, 2016: Edmonton, AB, Rexall Place
17.000
Thursday, April 21, 2016: Calgary, AB, Scotiabank Saddledome
19.000
Saturday, April 23, 2016: Vancouver, BC,Rogers Arena
19.000
Sunday, April 24, 2016: Seattle, WA, KeyArena
17.000
Wednesday, April 27, 2016: Salt Lake City, UT, Vivint Smart Home Arena
15.000
Friday, April 29, 2016: Las Vegas, NV, Mandalay Bay
12.000
Tuesday, May 03, 2016: Los Angeles, CA,Forum
17.000
Saturday, May 07, 2016: Oakland, CA, Oracle Arena
20.000
= 656.000
EUROPEAN DATES
Saturday, June 11, 2016: Amsterdam, Holland, Amsterdam Arena -
52.000
Tuesday, June 14, 2016: Coventry, United Kingdom, Ricoh Arena -
40.000
Thursday, June 16, 2016: Cardiff, United Kingdom, Cardiff Stadium
35.000
Saturday, June 18, 2016: Sunderland, United Kingdom, Stadium Of Light
54.000
Tuesday, June 21, 2016: Dublin, Ireland, Aviva Stadium
65.000
Friday, June 24, 2016: London, United Kingdom, Wembley Stadium
90.000
Monday, June 27, 2016: Glasgow, United Kingdom, Hampden Park
60.000
Wednesday, June 29, 2016: Manchester, United Kingdom, Emirates Old Park
65.000
Monday, July 4, 2016: Stockholm, Sweden, Tele2 Arena
45.000
Thursday, July 7, 2016: Copenhagen, Denmark, Refshale Island
NOT DEFINED (maybe festival
Saturday, July 9, 2016: Hamburg, Germany, Volkspark Stadion
50.000
Wednesday, July 13, 2016: Milan, Italy, San Siro
85.000
Friday, July 15, 2016: Nice, France, Allianz Stadium
35.000
Sunday, July 17, 2016: Frankfurt, Germany, Commerzbank Arena
44.000
Tuesday, July 19, 2016: Lyon, France, Grande Stade
60.000
Saturday, July 23, 2016: Lille, France, Stade Lille
50.000
Tuesday, July 26, 2016: Prague, Czech Republic, Synotip Arena
30.000
Thursday, July 28, 2016: Cologne, Germany, Rhein Energie Stadion
50.000
Saturday, July 30, 2016: Paris, France, Stade de France
80.000
Tuesday, August 2, 2016: Berlin, Germany, Olympiastadion
70.000
Friday, August 5, 2016: Warsaw, Poland, PGE Narodowy
70.000
Sunday, August 7, 2016: Munich, Germany, Olympiastadion
70.000
Wednesday, August 10, 2016: Vienna, Austria, Ernst Happel Stadium
50.000
Friday, August 12, 2016: Zurich, Switzerland, Letzigrund Stadion
50.000
= 1.300.000
So with those dates she could have 2M attendance (We know that the total attendance never matches the seats... but its to make an aproximation)
The Diamonds World Tour had a 1.62M attendance