Hello Katy Tour

Hello Katy Tour
Tour by Katy Perry
	Promotional poster for the tour
Associated album	One of the Boys
Start date	January 23, 2009
End date	November 28, 2009
Legs	10
No. of shows	95
Box office	$1.5 million ($2.13 million in 2023 dollars)
Katy Perry concert chronology
	; Strangely Normal Tour; (2001); ; Hello Katy Tour; (2009); ; California Dreams Tour; (2011–2012);

The Hello Katy Tour was the debut solo concert tour by American singer Katy Perry, in support of her second studio album, One of the Boys (2008). It ran from January 23, 2009, to November 28, 2009, and visited North America, Europe, Asia, and Australia.

^ 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved February 29, 2024.

[inflation-US-1] 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved February 29, 2024.

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