Kelly Clarkson will be giving her voice a workout this summer. The Grammy-winning pop star and original American Idol will be on tour from July 7 to Sept. 28, visiting nearly 40 U.S. and Canadian cities, it was announced Thursday.

"This will be the biggest tour I've ever done," Clarkson said in a statement. "It's all about the music - we're bringing extra musicians and we'll be making an arena environment intimate because I want the fans to be part of the show."

Clarkson, whose third album is set for a summer release, will open her tour with the Live Earth concert at Giants Stadium in East Rutherford, N.J. The tour will end in Las Vegas in September.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.