Katy Perry‘s first single "I Kissed a Girl" was so successful– it has pretty much spawned an entire world tour. The singer announced on Monday plans to headline across 50 cities beginning in January and spanning through May of 2009.

This is Katy’s first international headline tour, following the undisputed success of her debut album, One of the Boys. The tour kicks off in Seattle and will wrap in Perry’s hometown of Santa Barbara–hitting a number of international hot spots in between including Paris, London,Vancouver and  Amsterdam.

Alphabeat will open for Perry on all of her North American tour dates. Warped Tour alumni 3 OH 3! will join her on the European leg of the tour.

Tickets go on sale Nov. 14 and 15. Check below to find a concert in your city!

        Jan 23          Seattle, WA @ Showbox at the Market
        Jan 25          Vancouver, BC @ Commodore Ballroom
        Jan 26          Portland, OR @ Crystal Ballroom
        Jan 28          San Francisco, CA @ The Fillmore
        Jan 29          Sacramento, CA @ Empire Events Centre
        Jan 31          Los Angeles, CA @ Wiltern
        Feb 2           Tuscon, AZ @ University of Arizona
        Feb 3           Phoenix, AZ @ Marquee Theatre
        Feb 5           San Diego, CA @ House of Blues
        Feb 22          Stockholm @ Nalan
        Feb 23          Copenhagen @ Vega
        Feb 25          Manchester @ Academy
        Feb 26          London @ Koko
        Feb 27          London @ Koko
        Mar 1           Amsterdam @ Melkweg the Max
        Mar 2           Paris @ Elysee Montmarte
        Mar 4           Munich @ Kesselhaus
        Mar 5           Frankfurt @ Batschkapp
        Mar 6           Hamburg @ Grynspan
        Mar 7           Brussels @ Ancienne Belgique
        Mar 20          Houston, TX @ House of Blues
        Mar 21          Dallas, TX @ House of Blues
        Mar 23          Kansas City, MO @ Beaumont
        Mar 24          Minneapolis, MN @ First Avenue
        Mar 26          Chicago, IL @ House of Blues
        Mar 27          Detroit, MI @ Clutch Cargos
        Mar 28          Cleveland, OH @ House of Blues
        Mar 30          Toronto, ONT @ Kool Haus
        Apr 5           Philadelphia, PA @ Theatre of Living Arts
        Apr 7           New York, NY @ Irving Plaza
        Apr 10          Washington, DC @ 9:30 Club
        Apr 11          Myrtle Beach, SC @ House of Blues
        Apr 14          Nashville, TN @ Cannery
        Apr 15          Atlanta, GA @ CenterStage
        Apr 27          Ft. Lauderdale, FL @ Revolution
        Apr 28          St. Petersburg, FL @ Jannus Landing

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