* 1999: Perry signs with Red Hill Records and releases her debut album, *Katy Hudson*.
* 2004: Perry moves to Los Angeles and begins working with producer Dr. Luke.
* 2008: Perry releases her second album, *One of the Boys*, which features the hit singles "I Kissed a Girl" and "Hot n Cold".
* 2010: Perry releases her third album, *Teenage Dream*, which features the hit singles "California Gurls", "Fireworks", and "Last Friday Night (T.G.I.F.)".
* 2012: Perry embarks on her first headlining tour, the California Dreams Tour.
* 2013: Perry releases her fourth album, *Prism*, which features the hit singles "Roar", "Unconditionally", and "Dark Horse".
* 2015: Perry becomes a judge on the reality competition show *American Idol*.
* 2017: Perry releases her fifth album, *Witness*, which features the hit single "Chained to the Rhythm".
* 2019: Perry embarks on her second headlining tour, the Witness: The Tour.
* 2020: Perry releases her sixth album, *Smile*, which features the hit singles "Daisies" and "Smile".
* 2022: Perry becomes a resident performer in Las Vegas with her show, Play.