Shania Twain has announced Grand Rapids and Auburn Hills dates on her 2015 "Rock This Country Tour," which she says will be her last.

The superstar will play Grand Rapids' Van Andel Arena on July 11, and the Palace of Auburn Hills on July 25.

Special ticket pre-sales will start on March 10, with most shows will go on sale to the general public March 13. Prices and other ticket details have not yet been revealed.

Gavin DeGraw is slated to open for Twain at all her U.S. shows except in Seattle.

The tour will kick off June 5 in Seattle and includes 48 dates in the U.S. and Canada. This will be the 49-year-old Twain's first tour in 11 years -- and her last; the Windsor, Ontario, native turns 50 years old in late August.

She announced the tour on "Good Morning America" Wednesday morning, saying: "This is going to be a big tour for me because it's going to be my last. This is my last tour. I'm going to make the most of it. Let's put it that way."

Shania Twain's Rock This Country Tour with Gavin DeGraw
June 5 -- Seattle, Key Arena
June 7 and 9 -- Vancouver, Rogers Arena
June 11-12 -- Edmonton, Alberta, Rexall Place
June 14 -- Saskatoon, Saskatchewan, SaskTel Centre
June 15 -- Winnipeg, Manitoba, MTS Centre
June 20 -- London, Ontario, Budweiser Gardens
June 22 -- Hamilton, Ontario, First Ontario Centre
June 22 and 24 -- Toronto, Air Canada Centre
June 27 -- Ottawa, Wesley Clover Field
June 28 -- Montreal, Bell Centre
June 30 -- New York, Madison Square Garden
July 1 -- Uniondale, N.Y., Nassau Coliseum
July 3 -- Uncasville, Conn., Mohegan Sun Casino
July 7 -- Newark, N.J., Prudential Center
July 8 -- Boston, TD Garden
July 10 -- Pittsburgh, Consol Energy Center
July 11 -- Grand Rapids, Van Andel Arena
July 13 -- Indianapolis, Bankers Life Fieldhouse
July 15 -- Jacksonville, Jacksonville Veterans Memorial Arena
July 16 -- Miami, American Airlines Arena
July 18 -- Greenville, S.C., Bon Secours Arena
July 19 -- Charlotte, Time Warner Cable Arena
July 21 -- Washington, D.C., Verizon Center
July 22 -- Philadelphia, Wells Fargo Arena
July 25 -- Auburn Hills, The Palace of Auburn Hills
July 26 -- Moline, Ill., iWireless Center
July 28 -- Minneapolis, Target Center
July 29 -- Rosemont, Ill, Allstate Arena
July 31 -- Nashville, Bridgestone Arena
Aug. 1 -- Atlanta, Philips Arena
Aug. 3 -- Louisville, Ky., KFC Yum! Center
Aug. 4 -- St. Louis, Scottrade Center
Aug. 6 -- Des Moines, Iowa, Wells Fargo Arena
Aug. 7 -- Kansas City, Mo., Sprint Center
Aug. 9 -- Austin, Texas, Frank Erwin Center, University of Texas at Austin
Aug. 10 -- Dallas, American Airlines Center
Aug. 12 -- Oklahoma City, Chesapeake Energy Arena
Aug. 14 -- Denver, Pepsi Center
Aug. 15 -- Salt Lake City, Energy Solutions Arena
Aug. 17 -- San Jose, Calif., SAP Center
Aug. 19 -- Anaheim, Calif., The Honda Center
Aug. 20 -- Los Angeles, Staples Center
Aug. 22 -- San Diego, Valley View Casino Center
Aug. 23 -- Fresno, Calif., SaveMart Center