One of the hardest working women in show business for the past decade, Britney Spears has added a 2nd leg of USA tour dates!!!!!

"The Circus Starring Britney Spears" is the highest grossing tour of 2009 in North America to date!

Britney said,

"I'm so excited to bring The Circus back to North America. 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," exclaims Britney.

Britney's "really cool changes" should include keeping her tampon string from hanging out and instructing her dancers to keep away from her extensions, as well as drop kicking psycho fans who wanna dance with her on stage.

Tour dates are after the jump. Will you be attending? I just might. Tickets go on sale June 19.

AUGUST 2009
20 - Hamilton, ON - Copps Coliseum
21 - Ottawa, ON - Scotiabank Place
24 - New York, NY - MSG
25 - New York, NY - MSG
29 - Boston, MA - TD Banknorth Garden
30 - Philadelphia, PA - Wachovia Center
SEPTEMBER, 2009
1 - Orlando, FL - Amway Arena
2 - Miami, FL - AA Arena
4 - Atlanta, GA - Philips Arena
5 - Greensboro, NC - Coliseum
8 - Detroit, MI - The Palace of Auburn Hills
9 - Chicago, IL - Allstate Center
11 - Des Moines, IA - Wells Fargo Arena
12 - Grand Forks, IA - Alerus Center
15 - Tulsa, OK - BOK Center
16 - Houston, TX - Toyota Center
18 - Dallas, TX - American Airlines Center
19 - Bossier City, LA - CenturyTel Center
21 - El Paso, TX - Don Haskins Center
23 - Los Angeles, CA - Staples Center
26 - Las Vegas, NV - Mandalay Bay
27 - Las Vegas, NV - Mandalay Bay