Britney Spears has added a second North American leg to her "Circus" tour. An announcement on the pop singer's official website reported that she will begin a 20 stop trek in Ontario on August 20th. Tickets for all stops go on sale June 19th. Click Here for a complete list of dates.

"I'm so excited to bring The Circus back to North America," said Spears. "I've made some really cool changes to the show that I think my fans are really going to love. I also get to bring the show to some new cities we missed the first time around."