Fresh off her announcement that she would tour Australia for the first time ever, Britney Spears on Wednesday revealed that she will also come back to North America for an extension of her  “The Circus” tour.

Spears will play arenas in 20 cities, starting with an Aug. 20 show in Hamilton, Ontario, and ending on Sept. 27 in Las Vegas. In between, Spears and company will touch down in Atlanta, Chicago, New York, Boston, Philadelphia, Miami and Los Angeles, amid other stops.

Before Spears opened her “Circus” tour in March with a show in her native Louisiana, some had questioned whether she was ready for the stress of hitting the road again. The 27-year-old singer is under the conservatorship of her father, Jamie Spears, following a high-profile meltdown in 2007 and early 2008 that included stints in psychiatric care, an ugly divorce, shaving her head and partying without panties.

But the comeback tour seems to be going all right for the pop diva, who is currently performing in Europe. Concert trade publication Pollstar says her elaborate revue is one of the hottest tickets in North America this year with ticket sales of $61 million. The show features 50 dancers, magicians, clowns and acrobats and a production budget of $50 million and it travels in 34 trucks, her Jive Records label said.  

So with the November release of her chart-topping album “Circus” and with her song “Womanizer” scoring the singer her first No. 1 single in almost a decade, Spears seems to have proven that, if nothing else, she can still sell albums and pack music venues.

Does the tour prove that Spears is all the way back? And if you saw one of her shows, what did you think?