
In 2007, she released her first single Ur So Gay , which attracts public attention but is not successful in the charts in contrast to his second single: I Kissed A Girl in 2008 who is a true global success. That same year released his second album One of the Boys is the 33rd best selling album of the year 2008. His third single, Hot N Cold is a success too. Katy Perry is the first artist to have five hits in Billboard in a year.
In 2010, Katy released her third album, Teenage Dream with California Gurls as the first promotional single alongside Snoop Dogg and is a real worldwide success, and all its promotional singles from the album like Fireworks or The One That Got Away. Katy Perry is out for a long time with Travie McCoy. She married Russell Brand in October 2010 and divorced him in December 2011 after 14 months of marriage.

Age 9 to 17, she is educated in the ministry of his parents sang in their church. Not being allowed to listen to music "secular", she grew up listening to gospel music and attending schools and summer camps Christians. She learned to dance in a recreation center in Santa Barbara, where his classes are taught by dancers from the "old school" and learn the swing, the Lindy Hop, the Jitterbug.
She starts the song by imitating his sister, whom she borrowed cassettes, and sings a few songs to his parents, who suggested he take a vocal coach. It then follows of course, age 9 to 16, and joined the Music Academy of the West in Santa Barbara, where she studied a little Italian opera.

At 17, she left Los Angeles, where she worked with Glen Ballard on an album for the label Island Records. The latter, originally scheduled for 2005, was never finalized. Although released by the label Island Def Jam Music Group, some of these collaborations (such as Box, Diamonds and Long Shot ), however, appeared on his page MySpace, while the title Simple was used on the soundtrack of the film The Sisterhood jeans.
In 2004, Katy Perry signed to Columbia Records. After some tests, the project is abandoned, his vision is not the taste of the production. One of the ideas of Columbia is to have it work with the production team The Matrix, which was already working on an album and wanted to use the singer. Although the album will be dropped later, she captures the attention of the music press, and is billed as "The next big event" in October 2004 by the magazine Blender. In 2006, she appears at the end of the clip Goodbye for Now group POD, and also makes an appearance in the video for Carbon Leaf , Learn to Fly .

In the summer of 2008, Katy meets Russell Brand she begins to attend from September 2009. They became engaged early in January 2010 and were married in India October 23, 2010. Singer Rihanna, Katy Perry's close friend since her breakup with Chris Brown, organized his bachelor party girl. She is also friends with Avril Lavigne and Selena Gomez, met at the MTV Music Video Awards in September 2010.
On 30 December 2011, it was announced that Russell filed for divorce due to irreconcilable differences after 14 months of marriage.