LOS ANGELES - Britney Spears' 'Circus' tour is getting an encore and returning to North America with a stop in Hamilton Aug. 20

Holly Shakoor, publicist for Spears, said concerts also will be held in several U.S. cities, including New York, Philadelphia, Las Vegas and Los Angeles.

After Hamilton, Spears will play Ottawa Aug. 21, with plans to stop in North Carolina, Iowa, Oklahoma and Texas.

They will follow Spears' concerts in London and several other European cities. The 27-year-old singer also announced this week that her tour will go to Australia in November.

Spears' 'Circus' tour reached second place in recent box-office gross rankings by Pollstar.