Katy Perry is an American pop singer-songwriter and actress, best-known for her free-spirited vocabulary and personality, party-themed song lyrics, and stage costumes.

After a failed gospel-themed debut album in 2001, Perry released her second stubio album in 2008 entitled One of the Boys, which caused her popularity and commercial success to skyrocket.

Perry is best-known for her hit singles "I Kissed a Girl", "Hot n Cold", "Waking Up in Vegas", "California Girls" (with Snoop Dog), "Teenage Dream", "Firework", "E. T." (featuring Kanye West) and "Last Friday Night (T. G. I. F)".

Katy Perry is currently the first female artist to have five number-one hits in one year.