She has an older sister, Angela, and younger brother, Danny. Katy grew up in a deeply religious family and sang and listened to gospel music in church. Growing up, she wasn't allowed to watch MTV. After taking her GED, she left high school in pursuit of a career in music.
At age 15, she began visiting Nashville and recording demos. After signing with a Christian record label, Katy Perry released her first album under the name Katy Hudson. It did not do well.
At age 17, Katy Perry subsequently moved to Los Angeles and tried to land a record deal.
After failed attempts with Island Records and Columbia Records, in 2007, she signed with Capitol Records. She recorded her second album "One of the Boys" and released the smash single "I Kissed a Girl."
She said of the song, "The song was inspired by a friendship I had with a girl when I was 15, and I did kiss her. I was totally obsessed with her. She was beautiful " porcelain skin, perfect lips " and I still talk to her, but I've never told her the song is about her." Other reports claim the song was inspired by Scarlett Johansson.
Katy Perry has also written and sold songs to Kelly Clarkson and Jessie James.
Katy Perry's album "Teenage Dream" was only the second album after Michael Jackson's "Bad" to generate five #1 singles. Katy Perry became the first female artist to accomplish this feat.
In 2012, Katy Perry starred in a documentary film, "Katy Perry: Part of Me." She said, "I wanted to show the entire operation. People just think I'm the girl wearing the ruby slippers. I wanted to show them at the end of the journey. I am the Oz as well."
Katy Perry has said of her body, "I was shaped like a square at one time. I was! I'm generally around 130 pounds, which is totally fine for me. But when I was a kid, I was the same height and weighed more like 145. And I had enormous boobs that I didn't know what to do with.little did I know.that these things would come in handy someday."
Katy Perry is a natural blonde, but likes to dye her hair. Some of her hair color choices have included electric blue, dark purple, pale rose and cotton candy pink.
As of 2011, she had a net worth of $44 million.
In 2010, she married Russell Brand in India, saying, "Everything clicked really fast. We kind of instantly got past all the surfacey stuff. And ever since then, there hasn't been a dull moment." The marriage didn't last and the couple divorced in 2012. Katy Perry has been romantically linked with singer John Mayer. She is currently planning a divorce party to celebrate her second wedding anniversary to Russell Brand.