Sales from Shania Twain’s Rock This Country farewell tour have reached the $40 million mark so far, with 13 unreported concerts remaining.

The singer has sold 407,000 tickets across 35 shows since the tour's June 5 launch, but was beaten to the top spot in Billboard’s latest Hot Tours rankings by fellow country music superstar Kenny Chesney.

Chesney brought in $12.75m over four shows from August 1-15, with ticket sales of 136,386. Twain’s five concerts from August 3-9 recorded ...