Katy Perry

Katy Perry , stage name of Katheryn Elizabeth Hudson (born October 25 , 1984 in Santa Barbara), is an American pop singer-songwriter , actress , and guitarist . She achieved international fame with the song I Kissed a Girl , which reached number one in twenty countries. Her well-known hits include Roar and Dark Horse , both of which were hugely successful. Roar became the second best-selling single of 2014.