Katy Perry is an American singer and songwriter. She was born in 1984 in California. Some of her famous songs include "I Kissed a Girl", "Teenage Dream", "California Gurls", and "Firework". She is known for her colorful and playful style of dress on stage that often features themes from childhood like lollipops and bears. Perry cites influences from artists like Joan Jett, Madonna, and Cyndi Lauper.