Katheryn Elizabeth Hudson or stage name Katy Perry is a singer, songwriter and actor. She got into the music industry in the name Katy Hudson after she was signed to the record label, Capitol Music Group in 2007, the camp at No. 4 for a period of 7 years, she has changed the name of the new application. T Perry in 2008. She became the first to recognize the work of her first official album, titled One of the Boys, the song charted on the Billboard Top 10. Hot 100 studio album, the title Teenage Dream has topped the charts in Billboard 200 and Singleton 5 songs released include California Gurls, Teenage Dream, Firework, ET and Last Friday Night (TGIF) different. It was number one on the Billboard Hot 100 charts are counted as one album. (After Michael Jackson's Bad album) and singer is the first woman in history to do so.